Free NCCCO Tower Crane Operator Test 1

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

tilting axis

permitted load

ground force

load radius

Correct! Wrong!

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

Divide the hoist lines.

Reduce the load’s radius.

The front

Expand the boom’s height.

Correct! Wrong!

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

Never

He or she plans to proceed.

He/she plans to provide support

From daily to monthly

Correct! Wrong!

Before an operator exits the crane, he has to:

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

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

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

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

Correct! Wrong!

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

1926.14

3.5

5

45 ft.

Correct! Wrong!

What does the term “operating radius” mean?

at least 15 times the diameter of the rope

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

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

at least 18 times the diameter of the rope

Correct! Wrong!

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

25 ft.

30 ft.

45 ft.

35 ft.

Correct! Wrong!

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

increases the stability of the crane

It rises

It remains unchanged.

It declines

Correct! Wrong!

When the crane’s boom length is in between the lengths indicated in the load chart, which capacity should you use?

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

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

Depending on which next boom length is shorter or longer and has a lower capacity

They depend on the crane’s steadiness.

Correct! Wrong!

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

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

Make the blast as brief as you can

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

They depend on the crane’s steadiness.

Correct! Wrong!

What is the load hoisting sheaves minimum pitch diameter?

at least 16 times the diameter of the rope

at least 20 times the diameter of the rope

at least 18 times the diameter of the rope

at least 15 times the diameter of the rope

Correct! Wrong!

Free NCCCO Tower Crane Operator Test 1

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

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

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

Before an operator exits the crane, he has to:

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

What does the term “operating radius” mean?

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

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

When the crane’s boom length is in between the lengths indicated in the load chart, which capacity should you use?

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

What is the load hoisting sheaves minimum pitch diameter?

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