NCCCO Mobile Crane Operator Test 3

Question 1

Under which circumstance is a crack in the windshield of a crane cab okay?

Accepted Answer

As long as it causes no visible distortion that would interfere with safe operations

Answer

As long as it is less than 6 inches long

Answer

As long as the windshield is replaced on the next annual inspection

Answer

It is never okay

Question 2

Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted?

Accepted Answer

On-rubber chart

Answer

On-rubber chart plus 20%

Answer

On-outrigger chart

Answer

On-outrigger chart minus 20%

Question 3

According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?

Accepted Answer

Answer

75%

Question 4

When is side loading of crane booms permitted?

Accepted Answer

Only with freely suspended loads

Answer

So long as no jib is installed

Answer

When the operator says it's OK

Answer

Only when the outriggers are fully extended

Question 5

What is indicated if an operator makes two audible signals when moving a crane?

Accepted Answer

He/she intends to go ahead

Answer

He/she intends to back up

Answer

He/she intends to stop

Question 6

According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane?

Accepted Answer

100%

Answer

75%

Answer

110%

Answer

85%

Question 7

Where is the tipping axis of a crawler crane located?

Accepted Answer

It depends if the idler or sprocket are in line or offset from the track rollers

Answer

It is through the boom butt section

Answer

It is always at the centerline of the idler or sprocket

Answer

It is through the centerline of the crane cab

Question 8

What should be done with materials placed under overhead energized power lines?

Accepted Answer

Not be lifted by crane

Answer

Be lifted as normal

Answer

Handled with extra care

Answer

Be dragged out

Question 9

Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall?

Accepted Answer

At least as far back as the depth of the wall below ground

Answer

Anywhere, since the wall is unaffected by the weight of the crane

Answer

As close as possible to the wall

Answer

At a distance at least half the depth of the cellar wall below ground

Question 10

How should the wheels of a crane be positioned when it is set up for working on outriggers?

Accepted Answer

Just high enough off the ground to relieve the tires of crane weight

Answer

Firmly on the ground to support the crane

Answer

Just touching the ground

Answer

As high as possible off the ground