Certified Elevator Technician (CET) — Questions and Answers

Question 1: What is the PRIMARY purpose of continuing education requirements in Hydraulic Elevator Systems for CET professionals?

Earning additional credentials for career advancement
Maintaining current knowledge and competency as the field evolves (Correct answer)
Networking with other professionals in the field
Fulfilling mandatory regulatory requirements only

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Hydraulic Elevator Systems ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Certified Elevator Technician field.

Question 2: Which factor most directly determines the sheave groove diameter's effect on rope fatigue life?

Groove depth
The ratio of sheave pitch diameter to rope diameter (D/d ratio) (Correct answer)
Groove hardness
Number of grooves on the sheave

Correct answer: The ratio of sheave pitch diameter to rope diameter (D/d ratio)

The D/d ratio determines the bending radius the rope experiences each cycle; a higher D/d ratio means less bending stress and longer rope fatigue life.

Question 3: In a variable-frequency drive (VFD) controlled elevator, what determines the motor's rotational speed?

The output frequency supplied by the VFD (Correct answer)
The DC bus voltage level
The number of motor poles only
The gate signal to the IGBT modules

Correct answer: The output frequency supplied by the VFD

Motor speed in a VFD system is directly proportional to the output frequency, allowing smooth acceleration and deceleration profiles.

Question 4: In an elevator control circuit, what does a 'slowdown' switch typically do?

Switches the motor from high to low speed winding
Engages the emergency brake system
Signals the controller to begin deceleration before reaching a landing (Correct answer)
Stops the car at the terminal floor immediately

Correct answer: Signals the controller to begin deceleration before reaching a landing

A slowdown switch triggers the controller to initiate deceleration so the car arrives at a landing at proper leveling speed.

Question 5: In elevator electrical work, what does 'megger testing' verify?

Insulation resistance of wiring, motors, and cables (Correct answer)
Correct phase sequence of the main power supply
Motor shaft alignment and bearing condition
Continuity of the safety circuit chain

Correct answer: Insulation resistance of wiring, motors, and cables

A megohmmeter (megger) applies high DC voltage to measure insulation resistance, verifying that insulation has not degraded due to moisture, heat, or age.

Question 6: Which type of motor is commonly used in modern traction elevator systems?

AC induction motor
AC gearless permanent magnet motor (Correct answer)
DC brushed motor
Stepper motor

Correct answer: AC gearless permanent magnet motor

AC gearless permanent magnet motors are widely used for their energy efficiency and smooth operation.

Question 7: What must be done to an elevator after a governor and safety test is completed successfully?

Install new safety jaws and retest
Submit the elevator for re-certification immediately
Replace all governor rope segments
Inspect and reset the governor, reset safeties, test normal operation before returning to service (Correct answer)

Correct answer: Inspect and reset the governor, reset safeties, test normal operation before returning to service

After a safety test, the governor must be reset, safety devices inspected and reset, and normal operation verified before the elevator returns to passenger service.

Question 8: Why is personal protective equipment (PPE) important for elevator technicians?

Is optional per site supervisor
Reduces risk of workplace injury (Correct answer)
Improves technician appearance
Speeds up installation

Correct answer: Reduces risk of workplace injury

PPE such as gloves, helmets, and safety harnesses reduce the risk of injury from falls, electrical contact, or falling objects.

Question 9: When replacing conductors in an existing elevator installation, the new conductors must:

Be installed using the original wiring methods even if those methods are now outdated
Meet or exceed current applicable code requirements regardless of the original installation date (Correct answer)
Be the same insulation color as the original wiring being replaced
Match the original manufacturer's wire type and part number exactly

Correct answer: Meet or exceed current applicable code requirements regardless of the original installation date

Replacement conductors must comply with current code requirements; the original installation date does not allow grandfathering of substandard replacement materials or methods.

Question 10: In a duplex elevator group, what does 'dispatching logic' in the group controller determine?

Which car responds to a hall call based on position, direction, and load (Correct answer)
The motor acceleration rate for each individual car
The door open time for each landing
The leveling sensitivity at each floor

Correct answer: Which car responds to a hall call based on position, direction, and load

Dispatching logic assigns hall calls to the most efficient car based on real-time factors such as car position, travel direction, and passenger load.

Question 11: What documentation must an elevator contractor provide to the AHJ upon completion of a modernization?

A list of replaced parts with their costs
A customer satisfaction survey
A permit, as-built wiring diagrams, and a certificate of compliance or inspection (Correct answer)
Only a verbal confirmation that work is complete

Correct answer: A permit, as-built wiring diagrams, and a certificate of compliance or inspection

ASME A17.1 and most jurisdictions require updated as-built drawings, a closed permit, and an inspection certificate before returning the elevator to normal service.

Question 12: How does counterweight percentage of balance affect traction elevator energy consumption?

Counterweight balance has no effect on energy consumption
A counterweight balanced at 40–50% of rated load minimizes energy use by offsetting load in both directions (Correct answer)
A heavier counterweight always saves energy going up
Higher counterweight balance always reduces energy use regardless of traffic

Correct answer: A counterweight balanced at 40–50% of rated load minimizes energy use by offsetting load in both directions

Balancing at 40–50% of rated capacity means the motor does minimal work for light up-trips and light down-trips, optimizing energy across typical traffic patterns.

Question 13: Which ASME A17.1 rule governs the minimum factor of safety for elevator hoist ropes?

10.5 (Correct answer)
12.0
7.1
8.5

Correct answer: 10.5

ASME A17.1 requires a minimum factor of safety of 10.5 for steel wire hoist ropes based on rated load and speed.

Question 14: How often must routine safety inspections typically be conducted on commercial elevators?

Only before installation
When requested by building owner
Every 5 years
Annually (Correct answer)

Correct answer: Annually

Most jurisdictions require annual safety inspections to ensure continued safe operation and compliance with code requirements.

Question 15: When an existing hydraulic elevator's muffler is replaced during modernization, what is the main reason for this replacement?

To increase pump output pressure
To reduce hydraulic fluid pulsation noise transmitted through the piping and structure (Correct answer)
To allow a larger diameter pipe to be used
To eliminate the need for a pressure relief valve

Correct answer: To reduce hydraulic fluid pulsation noise transmitted through the piping and structure

Mufflers dampen pressure pulsations generated by the pump, reducing vibration and noise transmitted into the building structure and occupant spaces.

Question 16: A technician finds the car is consistently 1 inch below floor level at all landings when heavily loaded. The MOST likely cause on a traction elevator is:

A misadjusted door cam roller
Rope stretch due to increased load (Correct answer)
Worn car guide shoes causing car tilt
A faulty floor selector magnet

Correct answer: Rope stretch due to increased load

Under heavy load, hoist ropes stretch slightly beyond their normal length, causing the car to stop lower than the leveling position; re-leveling or rope compensation is required.

Question 17: What is the role of the door dwell time setting on an automatic elevator door operator?

Limits how long the door will attempt to close before reversing
Determines the motor acceleration rate during opening
Sets the maximum door closing speed
Controls how long the door pauses at the fully open position before closing (Correct answer)

Correct answer: Controls how long the door pauses at the fully open position before closing

Door dwell time is the adjustable period the door remains fully open at a landing, giving passengers adequate time to enter or exit before automatic closing begins.

Question 18: Which type of governor rope is required for use with elevator governors per ASME A17.1?

Synthetic fiber rope
Fiber core wire rope
Independent wire rope core (IWRC) (Correct answer)
Chain drive linkage

Correct answer: Independent wire rope core (IWRC)

ASME A17.1 requires independent wire rope core (IWRC) governor ropes for their superior strength and resistance to crushing.

Question 19: When an elevator is used as part of an accessible means of egress per IBC and ADA, what additional equipment is typically required inside the cab?

Emergency lighting only
Smoke detectors and sprinkler heads
Fire-rated cab interior materials
Two-way communication and standby power (Correct answer)

Correct answer: Two-way communication and standby power

Elevators serving as accessible means of egress must have two-way communication systems and standby power to operate during emergencies.

Question 20: According to ASME A17.1, what must happen if the door reopening device fails on a power-operated door?

The door must remain open until repaired
The door must still be able to close at reduced speed (Correct answer)
The door may close at normal speed with a warning buzzer
The elevator must be taken out of service immediately

Correct answer: The door must still be able to close at reduced speed

If the reopening device (such as a safety edge or light curtain) fails, the door must still be capable of closing but must do so at reduced kinetic energy.

Question 21: Which standard of practice is MOST important for ensuring quality in Accessibility & ADA Compliance?

Minimizing documentation to focus on practical work
Following evidence-based protocols while adapting to specific circumstances (Correct answer)
Using the most advanced technology available regardless of need
Strictly adhering to the same procedure in every situation

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Evidence-based protocols provide a foundation of proven practices, but effective Certified Elevator Technician professionals must also adapt their approach based on specific circumstances and individual case needs within Accessibility & ADA Compliance.

Question 22: Per NEC Article 620, which wiring method is approved for use inside elevator hoistways?

Non-metallic sheathed cable (NM-B) stapled to hoistway concrete
Rigid metal conduit (RMC), intermediate metal conduit (IMC), or electrical metallic tubing (EMT) (Correct answer)
Armored cable (AC) stapled at 4-foot maximum intervals
Open wiring on porcelain insulators at 4-foot intervals

Correct answer: Rigid metal conduit (RMC), intermediate metal conduit (IMC), or electrical metallic tubing (EMT)

NEC Article 620 requires conductors in hoistways to be installed in metal raceways such as RMC, IMC, or EMT to protect wiring from the mechanical hazards present in the hoistway environment.

Question 23: How does risk management apply to daily practice in Fire Service & Emergency Operations for Certified Elevator Technician professionals?

By avoiding high-risk situations entirely
Through proactive identification of potential hazards and implementation of preventive measures (Correct answer)
Only through responding to incidents after they occur
Through annual safety audits exclusively

Correct answer: Through proactive identification of potential hazards and implementation of preventive measures

Effective risk management in Fire Service & Emergency Operations requires proactive hazard identification and preventive measures, not just reactive responses. This approach reduces incidents, improves outcomes, and protects both professionals and clients.

Question 24: What is the purpose of the inner and outer decking on an escalator balustrade?

Houses the step-chain lubrication reservoir
Covers the internal components and provides a smooth surface adjacent to the steps (Correct answer)
Provides structural support for the truss
Guides the handrail return path

Correct answer: Covers the internal components and provides a smooth surface adjacent to the steps

Balustrade decking panels enclose the internal step-chain and guide mechanisms while presenting a smooth surface that reduces entrapment risk at the step-skirt interface.

Question 25: What documentation practice is considered essential in Escalator & Moving Walk Systems within the Certified Elevator Technician field?

Using shorthand notes that can be expanded later if needed
Only documenting unusual events or complications
Recording actions, observations, and outcomes in real-time or as close to the event as possible (Correct answer)
Completing all documentation at the end of the workday

Correct answer: Recording actions, observations, and outcomes in real-time or as close to the event as possible

Real-time or near-real-time documentation in Escalator & Moving Walk Systems ensures accuracy, provides a contemporaneous record, and is considered the gold standard for professional accountability and legal defensibility.

Question 26: A property owner wants to increase an elevator's speed from 100 FPM to 200 FPM during a modernization. Which component is most likely to require replacement due to this speed increase?

The hall lanterns
The governor (Correct answer)
The machine room ventilation
The car flooring

Correct answer: The governor

The governor must be replaced because its tripping speed is calibrated for the original contract speed, not the new higher speed.

Question 27: Under ADA and ASME A17.1, the door dwell time (time doors remain fully open at a landing) must be a minimum of how many seconds for an accessible elevator?

3 seconds (Correct answer)
5 seconds
10 seconds
2 seconds

Correct answer: 3 seconds

ADA Section 407.3.4 requires doors to remain fully open for a minimum of 3 seconds to allow wheelchair users sufficient time to enter or exit.

Question 28: What type of hydraulic fluid is recommended for environmentally sensitive installations?

Phosphate ester fire-resistant fluid
Petroleum-based ISO VG 46 fluid
Water-glycol hydraulic fluid
Biodegradable vegetable-based or synthetic ester fluid (Correct answer)

Correct answer: Biodegradable vegetable-based or synthetic ester fluid

Biodegradable vegetable-based or synthetic ester fluids are used in environmentally sensitive areas because they break down naturally if spilled.

Question 29: Which ASME A17.1 rule requires that escalator handrails be checked to ensure they move in the same direction and at approximately the same speed as the steps?

Rule 8.6.1.1 (Correct answer)
Rule 6.2.4.2
Rule 6.1.3
Rule 6.1.6.1

Correct answer: Rule 8.6.1.1

ASME A17.1 Rule 8.6.1.1 (periodic inspections for escalators) includes verifying handrail speed relative to step speed to prevent passenger falls.

Question 30: Conductors from different systems (such as lighting, power, and signal circuits) installed in the same elevator wireway must:

Always be the same AWG gauge to prevent voltage differences
Be separated by a metal barrier or otherwise comply with NEC requirements for system separation (Correct answer)
Have identical insulation color coding throughout the installation
All be grounded to a single common point within the wireway

Correct answer: Be separated by a metal barrier or otherwise comply with NEC requirements for system separation

NEC Article 620 and ASME A17.1 require separation of conductors from different systems to prevent electrical interference, cross-talk, and safety hazards from mixing incompatible circuit types.

Question 31: What is the MOST common cause of hydraulic elevator cylinder corrosion on underground installations?

Excessive pump pressure
Electrolytic corrosion from stray electrical currents in the soil (Correct answer)
Contaminated hydraulic fluid inside the cylinder
High hydraulic fluid temperature

Correct answer: Electrolytic corrosion from stray electrical currents in the soil

Underground steel cylinders are susceptible to electrolytic (galvanic) corrosion caused by stray ground currents passing through the soil.

Question 32: What type of lighting is required in an elevator machine room?

Permanent artificial illumination of at least 19 foot-candles (Correct answer)
Natural lighting with a window
Emergency lighting only
Portable task lighting only

Correct answer: Permanent artificial illumination of at least 19 foot-candles

ASME A17.1 requires permanent artificial lighting providing a minimum of 19 foot-candles (200 lux) at the floor level in machine rooms.

Question 33: What is the PRIMARY purpose of continuing education requirements in Fire Service & Emergency Operations for CET professionals?

Earning additional credentials for career advancement
Networking with other professionals in the field
Maintaining current knowledge and competency as the field evolves (Correct answer)
Fulfilling mandatory regulatory requirements only

Correct answer: Maintaining current knowledge and competency as the field evolves

Continuing education in Fire Service & Emergency Operations ensures professionals maintain current knowledge and skills as standards, technologies, and best practices evolve in the Certified Elevator Technician field.

Question 34: What effect does cold ambient temperature have on hydraulic elevator start-up performance?

It causes the relief valve to open at a lower pressure
It increases oil viscosity, potentially causing sluggish operation and poor leveling (Correct answer)
It has no significant effect on performance
It decreases oil viscosity, causing faster car acceleration

Correct answer: It increases oil viscosity, potentially causing sluggish operation and poor leveling

Cold temperatures increase oil viscosity, making it flow more slowly through valves and restricting flow, which results in sluggish starts and poor leveling until the fluid warms up.

Question 35: What documentation practice is considered essential in Door Operators & Interlocks within the Certified Elevator Technician field?

Only documenting unusual events or complications
Completing all documentation at the end of the workday
Using shorthand notes that can be expanded later if needed
Recording actions, observations, and outcomes in real-time or as close to the event as possible (Correct answer)

Correct answer: Recording actions, observations, and outcomes in real-time or as close to the event as possible

Real-time or near-real-time documentation in Door Operators & Interlocks ensures accuracy, provides a contemporaneous record, and is considered the gold standard for professional accountability and legal defensibility.

Question 36: When an elevator is taken out of service for maintenance, ASME A17.1 requires that the car doors be locked or the car be parked:

At the top floor with doors open
At the bottom landing with doors closed (Correct answer)
At any landing with a barricade
At the main landing with doors open

Correct answer: At the bottom landing with doors closed

When taken out of service, the elevator car should be parked at the bottom terminal landing with the car and hoistway doors closed and locked to prevent access.

Question 37: How must traveling cables be attached at the car and at the overhead support point?

With strain relief so that conductors are not subjected to tensile stress at terminations (Correct answer)
With cable ties spaced every 12 inches along the cable run
Welded directly to the car sling frame for a permanent connection
With spring-loaded connectors that allow free movement in all directions

Correct answer: With strain relief so that conductors are not subjected to tensile stress at terminations

Strain relief prevents mechanical tension from being transferred to the electrical connections, protecting conductors and terminals from fatigue failures caused by the cable's weight and motion.

Question 38: An elevator technician is testing Phase I recall. After activating the lobby key switch to 'RECALL,' one car continues to answer hall calls. What is the most likely cause?

The Phase I wiring to that car's controller is open or disconnected (Correct answer)
The car's doors are in the open position
The car is on independent service
The building fire alarm panel has overridden Phase I

Correct answer: The Phase I wiring to that car's controller is open or disconnected

If a car continues normal operation during Phase I recall, the most likely cause is a wiring fault preventing the recall signal from reaching that car's controller.

Question 39: On a high-speed door operator, what is the primary function of the door nudging feature?

Reverses the door if resistance exceeds a set threshold
Prevents the door from closing when passengers are detected
Sounds an alarm when the door is blocked
Speeds up door closing when an obstruction is detected for an extended period (Correct answer)

Correct answer: Speeds up door closing when an obstruction is detected for an extended period

Door nudging reduces closing speed and sounds a warning signal to clear obstructions that have held the door open beyond the preset time.

Question 40: Per ASME A17.1, what is the maximum allowable pit depth for a standard traction elevator without requiring an access ladder?

30 inches
24 inches
60 inches
48 inches (Correct answer)

Correct answer: 48 inches

ASME A17.1 requires a fixed metal ladder in pits deeper than 48 inches to allow safe access for maintenance personnel.

Question 41: During a traction elevator modernization, the existing wire rope is found to have broken wires within the allowable limit but shows significant corrosion. What is the correct action?

Apply additional lubrication and re-inspect in 30 days
Replace the ropes because corrosion is an independent disqualifying condition (Correct answer)
Continue using the rope until the broken wire limit is exceeded
Document the corrosion and proceed with modernization

Correct answer: Replace the ropes because corrosion is an independent disqualifying condition

Corrosion is an independent condition requiring rope replacement, regardless of broken wire count, because it compromises tensile strength unpredictably.

Question 42: What safety component cuts off power during an elevator malfunction?

Surge protector
Voltage stabilizer
Contactor
Circuit breaker (Correct answer)

Correct answer: Circuit breaker

A circuit breaker or main disconnect switch is designed to interrupt power during overload or faults to protect the system.

Question 43: Which code primarily governs elevator safety standards in North America?

OSHA 1910
NEC 2020
ASME A17.1/CSA B44 (Correct answer)
NFPA 70E

Correct answer: ASME A17.1/CSA B44

The ASME A17.1/CSA B44 Safety Code for Elevators is the key regulatory standard used throughout North America.

Question 44: What is the purpose of 'compensating ropes' or 'compensating chains' in a tall-rise traction elevator?

Compensate for the weight imbalance caused by hoist rope weight shifting as the car travels (Correct answer)
Provide a backup rope system in case primary ropes fail
Connect the car safety to the governor rope
Limit the travel speed on long rises

Correct answer: Compensate for the weight imbalance caused by hoist rope weight shifting as the car travels

Compensating ropes or chains loop under the car and counterweight to compensate for the changing weight of hoist ropes as the car moves up and down in high-rise applications.

Question 45: In a microprocessor-based elevator control system, what is a 'serial link' typically used for?

Supplying DC power to the motor encoder
Carrying high-voltage power to the car top junction box
Providing a dedicated safety circuit path for the door contacts
Communicating data between the machine room controller and the car operating panel (COP) (Correct answer)

Correct answer: Communicating data between the machine room controller and the car operating panel (COP)

A serial communication link (e.g., CAN bus or RS-485) transmits button calls, status data, and commands between the controller and the COP, reducing the number of traveling cables needed.

Question 46: What is the function of a 'door reversal device' in the elevator door control circuit?

Acts as a mechanical stop at the fully open position
Powers the door operator from an alternate source if the main supply fails
Reverses the door motor winding connections to enable reopening
Detects an obstruction and signals the door operator to reverse from closing to opening (Correct answer)

Correct answer: Detects an obstruction and signals the door operator to reverse from closing to opening

The door reversal device (such as a safety edge, light curtain, or pressure sensor) detects an obstruction and immediately commands the door operator to reverse direction and reopen.

Question 47: A traction elevator's guide rails show excessive rust pitting. What is the PRIMARY concern with this condition?

Electrical grounding issues
Lubricant contamination of the pit
Increased guide shoe wear
Impaired safety engagement and car ride quality (Correct answer)

Correct answer: Impaired safety engagement and car ride quality

Pitted rails can prevent the safety device from gripping uniformly, compromising emergency stopping performance and causing rough car movement.

Question 48: What is the effect of connecting a 230V elevator control transformer primary to a 208V supply?

The secondary output voltage will be proportionally lower than design, potentially causing control malfunctions (Correct answer)
The transformer will overheat and fail immediately
The secondary voltage will remain at the rated value due to voltage regulation
There will be no effect because both voltages are within 10% tolerance

Correct answer: The secondary output voltage will be proportionally lower than design, potentially causing control malfunctions

A lower-than-rated primary voltage produces a proportionally lower secondary voltage, which can cause contactors to drop out or PLC inputs to fall below their minimum threshold.

Question 49: What documentation practice is considered essential in Accessibility & ADA Compliance within the Certified Elevator Technician field?

Only documenting unusual events or complications
Recording actions, observations, and outcomes in real-time or as close to the event as possible (Correct answer)
Completing all documentation at the end of the workday
Using shorthand notes that can be expanded later if needed

Correct answer: Recording actions, observations, and outcomes in real-time or as close to the event as possible

Real-time or near-real-time documentation in Accessibility & ADA Compliance ensures accuracy, provides a contemporaneous record, and is considered the gold standard for professional accountability and legal defensibility.

Question 50: What is the purpose of sealing or sealing provisions on a governor after adjustment?

To prevent unauthorized adjustment of the trip speed setting (Correct answer)
To lubricate the flyweight bearings
To protect the jaws from corrosion
To secure the governor rope end fittings

Correct answer: To prevent unauthorized adjustment of the trip speed setting

Governors are sealed after calibration to ensure trip speed settings cannot be altered without evidence of tampering, maintaining safety integrity.

Question 51: What is the primary function of a phase-loss relay in a three-phase elevator motor circuit?

Balance the load across all three phases
Disconnect the motor if one phase is lost (Correct answer)
Regulate motor speed during acceleration
Provide overcurrent protection for the motor

Correct answer: Disconnect the motor if one phase is lost

A phase-loss relay monitors all three phases and disconnects the motor if any single phase is lost, preventing single-phasing damage.

Question 52: During a door interlock test, a technician bypasses the hoistway door interlock and the car moves. This result indicates:

The door operator speed is too high and must be adjusted
The interlock circuit is correctly wired in series
The retiring cam needs realignment
The interlock is NOT in the safety circuit and must be corrected (Correct answer)

Correct answer: The interlock is NOT in the safety circuit and must be corrected

If bypassing the interlock allows car movement, the interlock is not properly in series with the safety circuit, which is a code violation requiring immediate correction.

Question 53: Which component in a traction elevator system prevents the car from exceeding its rated speed?

Governor (Correct answer)
Buffer
Safety device
Brake drum

Correct answer: Governor

The governor monitors car speed and triggers the safety device if the car exceeds the overspeed threshold defined by ASME A17.1.

Question 54: The traveling cable loop transition point (where the cable changes from hanging down to running upward) should ideally be located:

At the machine room floor level for easy inspection access
At the lowest landing to minimize cable stress during high-speed travel
At the top of the hoistway to reduce the unsupported length of cable
Near the midpoint of the car's travel range to minimize cable movement and mechanical stress (Correct answer)

Correct answer: Near the midpoint of the car's travel range to minimize cable movement and mechanical stress

Positioning the loop transition near mid-travel minimizes the total range of cable movement and reduces cumulative mechanical stress on conductors over the life of the installation.

Question 55: A firefighter on Phase II service wants to travel from floor 5 to floor 12. After pressing the '12' button and pressing door close, the doors do not close. What should the technician check first during the post-incident inspection?

Whether the Phase I key switch was still in the 'ON' position
Whether the door reopening device (safety edge) was obstructed or defective (Correct answer)
Whether the car was overloaded beyond its rated capacity
Whether the machine room ventilation fan had failed

Correct answer: Whether the door reopening device (safety edge) was obstructed or defective

A defective or obstructed door reopening device (safety edge or light curtain) can prevent door closing during Phase II service.

Question 56: On a hydraulic elevator, the overspeed valve (rupture valve) is designed to close when:

The pump motor overheats
The car reaches the top floor
Oil flow rate exceeds a preset limit during descent (Correct answer)
The oil temperature drops below minimum

Correct answer: Oil flow rate exceeds a preset limit during descent

The rupture valve closes automatically when downward oil flow exceeds the rated descent speed flow rate, stopping uncontrolled descent.

Question 57: What is the maximum time delay allowed between the arrival of an elevator at a landing and the opening of the doors, per ASME A17.1 accessibility provisions?

The doors must begin opening at landing (Correct answer)
3 seconds after arrival
5 seconds after arrival
2 seconds after arrival

Correct answer: The doors must begin opening at landing

ASME A17.1 requires doors to begin opening at landing without delay; any hold-open dwell time starts after the doors have opened.

Question 58: A building owner asks why some elevators have TWO designated recall floors (main and alternate). Which scenario makes the alternate level necessary?

Buildings with more than 10 elevators always need an alternate level
Buildings over 75 feet must designate two recall floors per IBC
When smoke is detected at the main designated level lobby, elevators divert to the alternate (Correct answer)
The alternate level is for freight elevators only

Correct answer: When smoke is detected at the main designated level lobby, elevators divert to the alternate

The alternate designated level is required specifically for situations where smoke is detected in the lobby of the main designated level, preventing recall into a hazardous environment.

Question 59: Traveling cables used in elevator installations must be:

Listed specifically for elevator use and capable of withstanding repeated flexing (Correct answer)
Standard THHN building wire bundled in flexible metallic conduit
Any UL-listed wire of sufficient gauge for the connected load
Solid conductor wire rated at 600V minimum per NEC

Correct answer: Listed specifically for elevator use and capable of withstanding repeated flexing

Elevator traveling cables must be specifically listed for this application due to the unique demands of continuous flexing, torsion, and hoistway environmental conditions that standard wire cannot withstand.

Question 60: What is the maximum permitted gap between the escalator step riser and the step tread of the following step in the incline section?

1/4 inch
3/8 inch
1/2 inch
3/16 inch (Correct answer)

Correct answer: 3/16 inch

ASME A17.1 limits the gap between step components to 3/16 inch (4.76 mm) to prevent entrapment of small feet or footwear.

Question 61: What does 'harmonic distortion' from an elevator VFD affect in a building electrical system?

The VFD's internal DC bus only
Only the elevator motor windings
Only lighting circuits on the same phase
Other equipment connected to the same electrical distribution system (Correct answer)

Correct answer: Other equipment connected to the same electrical distribution system

VFDs generate harmonic currents that travel through the building's electrical distribution system and can cause overheating, nuisance tripping, and interference with sensitive equipment throughout the building.

Question 62: Per NEC 250.119, which color identifies the equipment grounding conductor in elevator wiring?

White or gray, consistent with neutral conductor identification
Green, green with yellow stripe, or bare copper (Correct answer)
Orange, reserved for ungrounded conductors in high-leg delta systems
Blue, used universally for grounding in three-phase systems

Correct answer: Green, green with yellow stripe, or bare copper

NEC 250.119 requires equipment grounding conductors to be green, green with yellow stripes, or bare copper — this standard applies uniformly across all NEC applications including elevators.

Question 63: Which ASME A17.1 rule governs the requirement for firefighters' emergency operation (Phase I and Phase II)?

Rule 3.26.3
Rule 2.26.1.2
Rule 2.26.2 (Correct answer)
Rule 2.27.3

Correct answer: Rule 2.26.2

ASME A17.1 Rule 2.26.2 establishes requirements for firefighters' emergency operation including Phase I recall and Phase II in-car service.

Question 64: Why must counterweight clearances be verified whenever new rope is installed on a traction elevator?

New rope creates more traction and causes the car to overshoot floors
New rope stretches during run-in, lowering the counterweight position and reducing pit clearance (Correct answer)
New rope increases brake wear due to higher tension
New rope is heavier and may overload the motor

Correct answer: New rope stretches during run-in, lowering the counterweight position and reducing pit clearance

New hoist ropes stretch during initial operation; if not accounted for, the counterweight may descend lower than designed, reducing the required pit buffer clearance.

Question 65: What minimum temperature must be maintained in an elevator machine room to protect electrical and mechanical components?

40°F (4°C)
60°F (15°C)
32°F (0°C)
50°F (10°C) (Correct answer)

Correct answer: 50°F (10°C)

ASME A17.1 requires machine room temperatures to be maintained above 50°F (10°C) to protect lubricants, electrical components, and control systems.

Question 66: In Fire Service & Emergency Operations, what is the FIRST step a CET professional should take when encountering a new case or situation?

Document the situation and wait for further instructions
Implement an immediate solution based on past experience
Conduct a comprehensive assessment and gather all relevant information (Correct answer)
Consult with a supervisor before taking any action

Correct answer: Conduct a comprehensive assessment and gather all relevant information

In Fire Service & Emergency Operations, a thorough initial assessment ensures all relevant factors are identified before deciding on an appropriate course of action. This systematic approach is fundamental to Certified Elevator Technician practice.

Question 67: Which component prevents passengers from inserting objects between the handrail and the balustrade deck at the newel?

Comb segment
Deck guard
Skirt brush
Handrail entry guard (deflector) (Correct answer)

Correct answer: Handrail entry guard (deflector)

Handrail entry guards are installed where the handrail enters the newel to prevent hands, clothing, or objects from being drawn into the handrail slot.

Question 68: What is the purpose of the pit stop switch on a traction elevator?

Activates the oil buffer
Stops the car at the lowest landing
Resets the safety circuit after overspeed
De-energizes the elevator for pit maintenance (Correct answer)

Correct answer: De-energizes the elevator for pit maintenance

The pit stop switch is a red emergency stop switch that cuts power to the elevator to allow safe maintenance work inside the pit.

Question 69: Which of the following conditions would cause a 'door open fault' on a microprocessor-based door operator during a closing cycle?

The door fails to reach the fully closed position within the allotted time (Correct answer)
The motor current exceeds the rated amperage for more than 5 seconds
The door closes faster than the programmed high-speed profile
The light curtain detects a break during the open dwell period

Correct answer: The door fails to reach the fully closed position within the allotted time

A door open fault is triggered when the door fails to complete its travel to the fully closed position within the controller's preset time window.

Question 70: A hydraulic elevator car drifts downward more than 3/8 inch within 5 minutes after arrival. According to ASME A17.1, this indicates:

Excessive valve leakage that must be corrected before continued operation (Correct answer)
A pump that is oversized for the application
An improperly adjusted up-limit switch
Normal behavior due to thermal contraction of the fluid

Correct answer: Excessive valve leakage that must be corrected before continued operation

ASME A17.1 sets a maximum allowable settlement limit; excessive drift indicates internal valve leakage that must be repaired to maintain safe leveling.

Question 71: Which NFPA standard governs fire safety requirements for escalators and moving walks in buildings?

NFPA 70
NFPA 72
NFPA 13
NFPA 101 (Correct answer)

Correct answer: NFPA 101

NFPA 101 (Life Safety Code) addresses escalator use as a means of egress and includes fire safety requirements for escalator openings between floors.

Question 72: Under ASME A17.1, which component is required to prevent the elevator car from descending into the pit when workers are present?

Car safeties
Pit stop switch
Car-on-pit-floor mechanical lock (Correct answer)
Runby limiting device

Correct answer: Car-on-pit-floor mechanical lock

A car-on-pit-floor mechanical lock (pit prop or equivalent) prevents the car from descending onto pit workers during maintenance work in the pit.

Question 73: What is the function of the car top inspection station (CTIS) on an elevator?

Resets the overspeed governor
Allows authorized personnel to operate the car at low speed from the car top for maintenance (Correct answer)
Controls lighting in the hoistway
Monitors door open/close cycles

Correct answer: Allows authorized personnel to operate the car at low speed from the car top for maintenance

The CTIS provides an inspection control that overrides normal operation, limiting car speed to inspection speed so technicians can safely work on top of the car.

Question 74: The 'Category 5 test' for elevators under ASME A17.1 requires which type of load test?

No-load test at rated speed
125% rated load static test
Full rated load test with safety device actuation (Correct answer)
150% rated load dynamic test

Correct answer: Full rated load test with safety device actuation

A Category 5 test is a full load test that includes actuation of the safety device with the rated load in the car to verify the car safety system can stop and hold the load.

Question 75: How does risk management apply to daily practice in Accessibility & ADA Compliance for Certified Elevator Technician professionals?

Through proactive identification of potential hazards and implementation of preventive measures (Correct answer)
By avoiding high-risk situations entirely
Through annual safety audits exclusively
Only through responding to incidents after they occur

Correct answer: Through proactive identification of potential hazards and implementation of preventive measures

Effective risk management in Accessibility & ADA Compliance requires proactive hazard identification and preventive measures, not just reactive responses. This approach reduces incidents, improves outcomes, and protects both professionals and clients.

Question 76: How does risk management apply to daily practice in Door Operators & Interlocks for Certified Elevator Technician professionals?

Only through responding to incidents after they occur
Through annual safety audits exclusively
By avoiding high-risk situations entirely
Through proactive identification of potential hazards and implementation of preventive measures (Correct answer)

Correct answer: Through proactive identification of potential hazards and implementation of preventive measures

Effective risk management in Door Operators & Interlocks requires proactive hazard identification and preventive measures, not just reactive responses. This approach reduces incidents, improves outcomes, and protects both professionals and clients.

Question 77: What is the function of an 'up-direction' contactor in a traditional relay-logic elevator controller?

Energizes the motor for counterclockwise rotation to move the car downward
Applies holding current to the electromagnetic brake
Reverses motor phase sequence to drive the car in the up direction (Correct answer)
Controls the speed of the motor during upward travel only

Correct answer: Reverses motor phase sequence to drive the car in the up direction

The up-direction contactor reverses the phase sequence of the motor supply, causing the motor to rotate in the direction that moves the car upward.

Question 78: What is the purpose of a 'top-of-car inspection' (TOCI) station in elevator electrical design?

Provides emergency lighting for hoistway inspection
Allows the motor room technician to monitor the car position from above
Transfers control authority to the car top, limits speed to inspection speed, and requires continuous pressure operation (Correct answer)
Bypasses the door contacts during annual inspection

Correct answer: Transfers control authority to the car top, limits speed to inspection speed, and requires continuous pressure operation

The TOCI station transfers control to the car top, restricts speed to no more than 150 ft/min (inspection speed), and requires constant-pressure operation for safe personnel movement.

Question 79: What is the purpose of a limit switch in elevator systems?

Measure speed
Signal for door closing
Control car lighting
Prevent over-travel of the elevator car (Correct answer)

Correct answer: Prevent over-travel of the elevator car

Limit switches prevent the elevator from moving beyond safe boundaries by cutting off power when limits are reached.

Question 80: What causes 'nuisance tripping' of the elevator main line circuit breaker?

Incorrect phase sequence at the main disconnect
Excessive motor starting current exceeding the breaker's instantaneous trip rating (Correct answer)
Low insulation resistance in the traveling cable
A failed encoder sending false speed signals

Correct answer: Excessive motor starting current exceeding the breaker's instantaneous trip rating

High inrush current during motor starting can exceed the instantaneous trip threshold of an incorrectly sized breaker, causing nuisance trips.

Question 81: Under OSHA 29 CFR 1910.68, the maximum rated load for a manlift step platform is:

300 lbs
200 lbs
250 lbs (Correct answer)
350 lbs

Correct answer: 250 lbs

OSHA 29 CFR 1910.68 specifies that manlift step platforms must be designed to carry a maximum load of 250 lbs.

Question 82: Under ADA, elevator hall call buttons must be located at what maximum height above the finished floor?

48 inches for all configurations
60 inches maximum regardless of approach
42 inches for side reach and 54 inches for forward reach
54 inches for side reach and 48 inches for forward reach (Correct answer)

Correct answer: 54 inches for side reach and 48 inches for forward reach

ADA specifies a maximum height of 54 inches for side reach and 48 inches for forward reach for elevator hall call buttons.

Question 83: What is the purpose of the 'independent service' mode on an elevator in relation to emergency operations?

It enables the elevator to run at reduced speed only
It activates Phase I recall automatically
It bypasses all safety devices
It removes the elevator from normal group dispatching for single-car manual control (Correct answer)

Correct answer: It removes the elevator from normal group dispatching for single-car manual control

Independent service removes the car from automatic group dispatching so it can be operated manually, but it is not an emergency mode like Phase II.

Question 84: What is the function of the elevator buffer?

Absorb energy at the shaft base (Correct answer)
Provide car acceleration
Control door movement
Measure car weight

Correct answer: Absorb energy at the shaft base

Buffers are installed at the bottom of the hoistway to absorb impact and stop the car safely if it travels too far downward.

Question 85: On a pallet-type moving walk, what retains the pallets in their proper lateral position along the track?

Comb plate teeth
Guide shoes riding on the truss chord
Pallet axle flanges engaging guide rails (Correct answer)
The handrail drive belt

Correct answer: Pallet axle flanges engaging guide rails

Pallet axle flanges or guide wheels engage dedicated guide rails in the truss to keep each pallet laterally aligned throughout the circuit.

Question 86: Per ASME A17.1, the minimum conductor size permitted for elevator power circuits is:

18 AWG, the standard minimum for fixture wiring
14 AWG, ensuring adequate current capacity and mechanical strength (Correct answer)
10 AWG, providing a conservative safety margin for motor loads
22 AWG, consistent with low-voltage control circuit minimums

Correct answer: 14 AWG, ensuring adequate current capacity and mechanical strength

ASME A17.1 specifies No. 14 AWG as the minimum conductor size for elevator power circuits, balancing current-carrying capacity with mechanical durability in the hoistway environment.

Question 87: Which standard of practice is MOST important for ensuring quality in Door Operators & Interlocks?

Using the most advanced technology available regardless of need
Minimizing documentation to focus on practical work
Following evidence-based protocols while adapting to specific circumstances (Correct answer)
Strictly adhering to the same procedure in every situation

Correct answer: Following evidence-based protocols while adapting to specific circumstances

Question 88: What type of guide shoe uses a renewable liner that slides along the rail?

Roller guide shoe
Sliding (friction) guide shoe (Correct answer)
Magnetic guide shoe
Compound guide shoe

Correct answer: Sliding (friction) guide shoe

Sliding guide shoes use replaceable plastic or bronze liners that contact and slide along the three faces of the T-rail, providing guidance with low maintenance.

Question 89: The handrail speed on an escalator must be maintained within what tolerance of step speed?

±1%
±10%
±2%
±5% (Correct answer)

Correct answer: ±5%

ASME A17.1 requires handrail speed to be within ±2% of step speed to prevent passenger imbalance, though some codes cite 0–2% above step speed.

Question 90: What is the purpose of the compensation ropes or chains in a high-rise traction elevator?

To connect the governor to the safety device
To limit car travel speed
To provide emergency braking
To balance the weight of the hoist ropes between car and counterweight (Correct answer)

Correct answer: To balance the weight of the hoist ropes between car and counterweight

Compensation ropes or chains counteract the changing weight imbalance of hoist ropes as the car travels through long hoistways.

Question 91: Which edition of the ICC/ANSI A117.1 standard governs accessible elevator cab dimensions used in ADA compliance?

Always the 2017 edition
Always the 2009 edition
The edition adopted by the local jurisdiction (Correct answer)
The edition in force at original construction

Correct answer: The edition adopted by the local jurisdiction

Accessibility requirements default to the ICC/ANSI A117.1 edition adopted by the local jurisdiction, which varies by state and municipality.

Question 92: When a new microprocessor controller is installed during modernization, what must be provided in the machine room for the new system?

A new pit access ladder
Updated wiring diagrams reflecting the as-installed condition (Correct answer)
A separate utility sink
A dedicated fire suppression system

Correct answer: Updated wiring diagrams reflecting the as-installed condition

ASME A17.1 requires current, accurate wiring diagrams to be available in the machine room so technicians can safely service the system.

Question 93: An elevator's door reopens immediately after closing without an obstruction. The FIRST component to check is:

The door close limit switch
The door safety edge or light curtain circuit (Correct answer)
The floor selector position feedback
The car operating panel close button wiring

Correct answer: The door safety edge or light curtain circuit

An unobstructed door that reverses points to a fault signal from the safety edge or light curtain circuit, making it appear the door is blocked when it is not.

Question 94: What is the primary purpose of adding a car position indicator (CPI) during an elevator modernization?

To provide passengers with real-time floor position information, improving user experience and code compliance (Correct answer)
To reduce the controller's processing load
To replace the need for leveling switches
To display advertising content on the car interior

Correct answer: To provide passengers with real-time floor position information, improving user experience and code compliance

CPIs inform passengers of the car's current floor location and direction, meeting modern accessibility and user experience standards often required by updated codes.

Question 95: What is the purpose of a 'buffer stopping switch' in the elevator pit electrical circuit?

Cuts power to the pit lighting when the car is above the pit
Resets the buffer oil level after compression
Activates the pit stop switch alarm
Opens the safety circuit when the car strikes an oil or spring buffer (Correct answer)

Correct answer: Opens the safety circuit when the car strikes an oil or spring buffer

The buffer stopping switch opens the safety circuit when the car or counterweight contacts a buffer, cutting power and preventing further car movement.

Question 96: Which condition would require immediate replacement of a governor rope?

Minor surface oxidation
Slight kinking from installation
Six broken wires in one lay length (Correct answer)
One broken wire in any strand

Correct answer: Six broken wires in one lay length

ASME A17.1 requires governor rope replacement when six or more broken wires are found in one lay length of the rope.

Question 97: Which component converts AC to DC for elevator control circuits?

Capacitor
Transformer
Resistor
Rectifier (Correct answer)

Correct answer: Rectifier

Rectifiers are used to convert alternating current (AC) to direct current (DC) for elevator control components.

Question 98: What is the consequence of operating a traction elevator with unequal rope tensions?

Increased ride comfort due to load redistribution
Automatic speed regulation by the controller
Overloading of some ropes and premature wear, reducing the overall safety margin (Correct answer)
Reduced energy consumption by the motor

Correct answer: Overloading of some ropes and premature wear, reducing the overall safety margin

Unequal tensions concentrate load on fewer ropes, reducing the effective safety factor and accelerating fatigue failure of the overloaded ropes.

Question 99: Tactile floor designations on elevator jambs must be mounted at what height measured from the finished floor per ADA?

54 inches (1370 mm) to center
48 inches (1220 mm) to center
60 inches (1525 mm) to center (Correct answer)
72 inches (1830 mm) to center

Correct answer: 60 inches (1525 mm) to center

ADA Section 407.2.3 requires floor designations on elevator hoistway jambs to be centered at 60 inches above the finished floor so they are reachable for tactile reading.

Question 100: Under ASME A17.1, what is the purpose of the 'car leveling device' and what tolerance is permitted?

Stops the car within ±3 inches of landing
Stops the car within ±1 inch of landing
Stops the car within ±2 inches of landing
Stops the car within ±½ inch of landing (Correct answer)

Correct answer: Stops the car within ±½ inch of landing

ASME A17.1 requires car leveling devices to bring the car to within ±½ inch of the landing floor level to ensure safe egress.

Certified Elevator Technician (CET)

The NAEC CET certification validates advanced knowledge and skill in elevator installation, maintenance, repair, and safety compliance. It is the professional benchmark for elevator technicians, covering electrical systems, mechanical systems, safety codes, and troubleshooting.

100

Questions

180 min

Time Limit

70%

To Pass

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