NCCCO Tower Crane Operator Test 1

Question 1

What is the load hoisting sheaves minimum pitch diameter?

Accepted Answer

at least 18 times the diameter of the rope

Answer

at least 16 times the diameter of the rope

Answer

at least 20 times the diameter of the rope

Answer

at least 15 times the diameter of the rope

Question 2

Boom length and angle can be utilized in a range diagram to ascertain

Accepted Answer

load radius

Answer

tilting axis

Answer

permitted load

Answer

ground force

Question 3

How many line segments are needed to lift a 36,500 lb object? load if 9,000 pounds is the highest permitted line pull?

Accepted Answer

5

Answer

1926.14

Answer

3.5

Answer

45 ft.

Question 4

An auxiliary boom point sheave, sometimes known as a rooster sheave, is used primarily to:

Accepted Answer

Divide the hoist lines.

Answer

Reduce the load's radius.

Answer

The front

Answer

Expand the boom's height.

Question 5

When the load moment indicator (LMI) on a crane malfunctions, what should an operator do?

Accepted Answer

Put an end to crane operations and notify the supervisor of the situation.

Answer

Make the blast as brief as you can

Answer

At least as far back as the wall's subsurface depth

Answer

They depend on the crane's steadiness.

Question 6

Before an operator exits the crane, he has to:

Accepted Answer

ANSI B30.5-3.1.2: Position all dogs or pawls inside the load when it is on the ground.

Answer

From the center of the boom tip sheave to the boom hinge pins

Answer

Put an end to crane operations and notify the supervisor of the situation.

Answer

From the top of the reel to the top of the drum, the rope extends.

Question 7

When a crane's boom is lowered, what happens to the load's leverage?

Accepted Answer

It rises

Answer

increases the stability of the crane

Answer

It remains unchanged.

Answer

It declines

Question 8

When a crane operator gives two audible signals while operating the machine, what does it mean?

Accepted Answer

He or she plans to proceed.

Answer

Never

Answer

He/she plans to provide support

Answer

From daily to monthly

Question 9

What does the term "operating radius" mean?

Accepted Answer

The separation between the load's center of gravity and the crane's center of rotation

Answer

at least 15 times the diameter of the rope

Answer

The load chart's specified capacity less the sum of the weights of the rigging and all attachments

Answer

at least 18 times the diameter of the rope

Question 10

What minimal space between any portion of the crane or load and 850kV energized overhead power wires must be maintained, per OSHA 1926.1408?

Accepted Answer

45 ft.

Answer

25 ft.

Answer

30 ft.

Answer

35 ft.