Ramsay Test Electrical 3 — Questions and Answers
Question 1: What does a multimeter set to the ohms range measure?
- Resistance (Correct answer)
- Power
- Frequency
- Magnetic flux
Correct answer: Resistance
The ohms setting measures resistance in a component or circuit.
Question 2: Three 6-ohm resistors are connected in series. What is the total resistance?
- 18 ohms (Correct answer)
- 2 ohms
- 6 ohms
- 12 ohms
Correct answer: 18 ohms
Series resistances add, so 6 + 6 + 6 = 18 ohms.
Question 3: Which color is typically used for the equipment grounding conductor in US wiring?
- Green (Correct answer)
- Black
- Red
- Blue
Correct answer: Green
Green or bare wire is the standard US equipment grounding conductor.
Question 4: What component stores energy in an electric field?
- Capacitor (Correct answer)
- Inductor
- Resistor
- Diode
Correct answer: Capacitor
A capacitor stores energy in the electric field between its plates.
Question 5: A motor that fails to start but hums is most likely missing:
- A starting capacitor or phase (Correct answer)
- Excess voltage
- A ground fault
- Too little load
Correct answer: A starting capacitor or phase
A humming motor that won't start often lacks starting torque from a bad capacitor or lost phase.
Question 6: What is the frequency of standard US residential AC power?
- 60 Hz (Correct answer)
- 50 Hz
- 120 Hz
- 25 Hz
Correct answer: 60 Hz
Standard US residential power operates at 60 hertz.
Question 7: Which instrument measures current without breaking the circuit?
- Clamp meter (Correct answer)
- Inline ammeter
- Voltmeter
- Ohmmeter
Correct answer: Clamp meter
A clamp meter senses the magnetic field around a conductor to read current.
Ramsay Test Electrical 3
What does a multimeter set to the ohms range measure?