NCCCO Mobile Crane Test (New 2023/ 2024 Update) Questions and Verified Answers| Graded A| 100% Correct

NCCCO Mobile Crane Test (New 2023/ 2024 Update) Questions and Verified Answers| Graded A| 100% Correct

NCCCO Mobile Crane Test (New 2023/ 2024
Update) Questions and Verified Answers|
Graded A| 100% Correct
QUESTION
Where is the tipping axis of a crawler crane located?
a. It is always at the centerline of the idler or sprocket
b. It depends if the idler or sprocket are in line or offset from the track rollers
c. It is through the centerline of the crane cab
d. It is through the boom butt section
Answer:
b.
QUESTION
What should be done with materials placed under overhead energized power lines?
a. Be dragged out
b. Be lifted as normal
c. Not be lifted by crane
d. Handled with extra care
Answer:
c.
QUESTION
What standard method hand signal is being illustrated?
a. Boom up
b. Boom down
c. Retract boom
d. Hoist
Answer:
c.

QUESTION
Where should the crane’s outrigger pads or tracks be placed when working at ground floor level
near a cellar wall?
a. As close as possible to the wall
b. At least as far back as the depth of the wall below ground
c. At a distance at least half the depth of the cellar wall below ground d. Anywhere, since the
wall is unaffected by the weight of the crane
Answer:
b.
QUESTION
How should the wheels of a crane be positioned when it is set up for working on outriggers?
a. Just touching the ground
b. As high as possible off the ground
c. Just high enough off the ground to relieve the tires of crane weight d. Firmly on the ground to
support the crane
Answer:
c.
QUESTION
What happens to ground bearing pressure if you move a crawler crane from soft ground to
harder ground?
a. It increases
b. It decreases by a third
c. It remains the same
d. It decreases by half
Answer:
a.
QUESTION
When may a swivel be used with rotation resistant wire rope?

a. Always
b. Never
c. If the rope manufacturer approves
d. If the operator decides it’s OK
Answer:
c.
QUESTION
What should you do on pick and carry operations?
a. Keep the boom as short as possible
b. Keep the load as high above the ground as possible
c. Ensure the load is as far from the carrier/carbody as possible
d. Use maximum boom length
Answer:
a.
QUESTION
What boom position would cause the greatest ground pressure when lifting with crawler
cranes?
a. Over the right side
b. Over the end
c. Over the corner
d. over the left side
Answer:
c.
QUESTION
Where should the hook be positioned when preparing to hoist a light load?
a. Slightly to the side you’re planning to swing to
b. Slightly to the side opposite you plan to swing to
c. Directly above the load’s center of gravity
d. Above the edge of the load closest to the crane
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Boom up
What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up?

1%
When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid?

Stay in the cab until the lines are de-energized
The load line of the crane you’re operating contacts an energized power line. There’s no sign of any other danger, such as fire. What should you do?

2 broken wires in 6 rope diameters
According to OSHA 1926.1413, how many randomly distributed broken wires in rotation-resistant rope are cause for replacement of the rope?

The capacity listed in the load chart minus the weight of the rigging and all attachments
What is the net capacity of a crane on main boom unless the manufacturer states otherwise?

It could swing out away from the crane
What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection?

Swing
What Standard Method hand signal is being illustrated?

Anyone
Who should an operator respond to a “stop” signal from?

The fron
Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise?

The distance from the center of rotation of the crane to the center of gravity of the load
What is the definition of “operating radius?”

They are based on the stability of the crane
What applies to the capacities below the bold line shown on a load chart?

Over the front
In which quadrant are rough terrain crane capacities generally greater?

It is never okay
According to federal requirements, under what conditions is it okay for a person to ride the headache ball?

20%.
By what percentage do most manufacturers require a crane’s load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement?

From the boom hinge pins to the center of the boom tip sheave
From which two points should the boom be measured?

the rope runs from the top of the reel to the top of the drum
What is the preferred method of installing wire rope from a reel onto a hoist drum?

Over the rear.
Over which quadrant are truck crane capacities usually greater?

The swing radius of the rear of the rotating superstructure
According to OSHA, which accessible area of an operating crane must always be barricaded?

1926.1400
What is the OSHA regulation governing cranes in construction

As long as it causes no visible distortion that would interfere with safe operations
Under which circumstance is a crack in the windshield of a crane cab okay?

As long as there is no less hazardous or practicable way
Under which circumstance does OSHA permits hoisting of personnel by crane?

On-rubber chart
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?

50%
According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane’s rated capacity?”

Only with freely suspended loads
When is side loading of crane booms permitted?

He/she intends to go ahead
What is indicated if an operator makes two audible signals when moving a crane?

Never
When may blocking (cribbing) be placed under outrigger beams?

Makes the crane more stable
What is the result of placing timber blocking under the tips of the tracks on a crawler crane?

100%
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?

It depends if the idler or sprocket are in line or offset from the track rollers
Where is the tipping axis of a crawler crane located?

Not be lifted by crane
What should be done with materials placed under overhead energized power lines?

Retract boom
What standard method hand signal is being illustrated?

At least as far back as the depth of the wall below ground
Where should the crane’s outrigger pads or tracks be placed when working at ground floor level near a cellar wall?

Just high enough off the ground to relieve the tires of crane weight
How should the wheels of a crane be positioned when it is set up for working on outriggers?

It remains the same
What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground?

If the rope manufacturer approves
When may a swivel be used with rotation resistant wire rope?

Keep the boom as short as possible
What should you do on pick and carry operations?

Over the corner
What boom position would cause the greatest ground pressure when lifting with crawler cranes?

Directly above the load’s center of gravity
Where should the hook be positioned when preparing to hoist a light load?

45 ft.
According to OSHA 1926.1408, what minimum clearance must be maintained between any part of the crane/load and 850kV energized overhead power lines.

5
How many parts of line are required to hoist a 36,500 lb. load if the maximum allowable line pull is 9,000 lbs.?

The effective weight of the jib
What determines the amount of deduction required for an erected jib that is not being used?

The next longest or the next shortest boom length, whichever is the lower capacity
What capacity should you use when the boom length of the crane falls between the lengths listed in the load chart?

During assembly/disassembly operations
When is it okay to temporarily bypass a crane’s overload warning system?

It increases
What happens to the leverage of the load on a crane as the boom is being lowered?

OSHA Subpart CC
Where are the Standard Method hand signals found?

Cease crane operations and report the condition to the supervisor
What should an operator do if a crane’s load moment indicator (LMI) malfunctions?