NCCCO CORE EXAM - 170 QUESTIONS AND ANSWERS

NCCCO CORE EXAM - 170 QUESTIONS AND ANSWERS

100 % PASS SOLUTION A+ GRADE

Which regulation governs the lifting of personnel - ANSWER- OSHA 1926.1431

Backward stability of a mobile crane is tested in which configuration listed below? - ANSWER- Basic boom at maximum angle with no load

On mobile cranes operating with outriggers retracted, the least stable position is when the boom is directly over the? - ANSWER- Side

When a rough terrain crane is working on tires, backward tipping is most likely to occur when lifting which configuration? - ANSWER-Side quadrant at a short radius

When traveling a rough terrain mo Ike crane with a suspended load, which of the following is the most important consideration?

• ANSWER-Boom low as possible with the load close to the surface.

When retracting the boom on a telescopic mobile crane, the hook block and load will move in what direction? - ANSWER-Down

Rough terrain mobile crane capacities are generally greater over the? - ANSWER-Front

Mobile crane capacities are generally greater over the? - ANSWER-Rear

What is the hand signal guy communicating to the operator if he is facing the load with his arms extend at should length in front of his body with his hands facing up and palms facing the operator?

• ANSWER-Wheel Travel
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You're setting your crane up in a confined area and you cannot fully extend your fourth outrigger. Your crane does not have a load chart for a intermediate extension working. In such a situation you should ya the capacities in the? - ANSWER-On- rubber load chart

How many RANDOMLY distributed broken wires in rotation- resistant rope are cause for replacement? - ANSWER-2 broken wires in 6 rope diameters

Which is the most common cause of death to crane operators? - ANSWER-Crane turnover

Unless the manufacturer states otherwise, a truck crane generally have no lifting capacity over which area? - ANSWER-The front

Truck crane capacities are usually greater over the? - ANSWER- Rear

A truck crane is set up on outriggers. The load chart governed by stability is based on what percentage of the cranes capacity? - ANSWER-85%

A crane is set up with 3 of its 4 outriggers fully extended and the fourth retracted. Unless the manufacture states otherwise, the capacity of the crane in this configuration will be found in the? - ANSWER-On-Rubber chart

When lifting personnel the total weight of the loaded personnel platform must not exceed what percentage of the rates capacity of the crane? - ANSWER-50%

When handling boom sections, the best place for slings to be attached is? - ANSWER-At the pin connection points at the ends of the top chords

Tipping axis of a crawler crane? - ANSWER-Depends if the idler or sprocket are in line or offset from the track rollers

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On a crawler crane, ground bearing pressure is greatest over which quadrant? - ANSWER-Over the corner

If a job is erected but not being used to lift the load, you should make a deduction from the gross capacities listed in the load chart based on? - ANSWER-The effective weight of the jib

Definition of operating radius - ANSWER-Distance from center of rotation to center of gravity of the load

Which Quadrant are rough terrain crane capacities greater - ANSWER-Over the front

From which 2 points should the boom be measured - ANSWER- Boom hinge pins to center of boom tip sheeve

Which quadrant are truck crane capacities greater - ANSWER- Over the rear

Which accessible area of an operating crane must always be barricaded - ANSWER-Swing radius of superstructure

When does OSHA permit hoisting personnel by crane - ANSWER- When there is no less hazardous or practicable way

While hoisting personnel total load must not exceed what percentage of crane capacity -

ANSWER-50%

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

Placing timber blocking under tips of tracks on crawler crane does what - ANSWER-More stability

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