NCCCO Tower Crane Operator Test 1 2

Question 1

What type of foundation is typically used for a freestanding tower crane on a construction site?

Accepted Answer

A deep reinforced concrete mat foundation designed by a licensed engineer to specific crane model and site soil conditions

Answer

Shallow spread footing designed by the site contractor

Answer

Standard building pad footings shared with the structure being built

Answer

Temporary steel plates placed on the existing ground surface

Question 2

What is the role of the tower crane operator with respect to the load chart before beginning daily operations?

Accepted Answer

The operator must verify that the load chart in the cab matches the crane's actual configuration (jib length, ballast, mast height) before any lifts are made

Answer

The operator only needs to check the load chart weekly

Answer

Load chart verification is the lift supervisor's responsibility, not the operator's

Answer

Operators use the same load chart for all configurations; one chart covers all setups

Question 3

What is the purpose of the tower crane's hoist limit switch (upper limit switch)?

Accepted Answer

To stop hoist motion before the hook block reaches the boom tip or cat head, preventing two-blocking and rope/component damage

Answer

To prevent the hook from being lowered below grade

Answer

To indicate when the rated hook height has been reached for lift planning

Answer

To automatically engage the hoist brake when the load is at maximum height

Question 4

What is the maximum radius limit switch on a tower crane and what does it protect?

Accepted Answer

A limit switch that stops trolley travel before it reaches maximum radius, preventing the load from reaching positions where it would exceed rated capacity limits

Answer

A device limiting the crane's rotation angle

Answer

A switch that limits the number of crane rotations to prevent power cable twist

Answer

A safety device protecting the slewing ring from overspeed rotation

Question 5

What is the purpose of a tower crane operator's pre-shift walk-around inspection?

Accepted Answer

To identify any obvious damage, missing components, fluid leaks, or unusual conditions that could affect safe operation before loads are lifted

Answer

To verify the crane is properly painted and free of rust for customer appearance standards

Answer

Pre-shift walk-arounds are not required for tower cranes as they are permanently installed

Answer

Walk-arounds are only required after weekend shutdowns, not daily

Question 6

What is the function of a tower crane anemometer and what should an operator do when it reads above the in-service limit?

Accepted Answer

The anemometer measures wind speed; when it exceeds the manufacturer's in-service limit, the operator must immediately cease all crane operations

Answer

The anemometer measures humidity to protect electrical systems; no action is needed below 80% humidity

Answer

The anemometer is a planning tool only; operators may continue if the load is light

Answer

The anemometer monitors wind speed but only applies to assembly operations, not normal use