NCCCO Mobile Crane Operator Fundamentals 2

Question 1

What does the term 'rated capacity' mean for a mobile crane?

Accepted Answer

The maximum load the crane is designed to handle under specified conditions

Answer

The maximum speed the crane can travel on a public road

Answer

The total weight of the crane including counterweights

Answer

The maximum height the crane boom can be raised

Question 2

Which of the following must be done before operating a mobile crane on a new job site?

Accepted Answer

Review the load chart and assess ground conditions for stability

Answer

Extend all outriggers to full extension regardless of the lift

Answer

Remove all counterweights to reduce transport weight

Answer

Set the maximum boom angle to 90 degrees for all lifts

Question 3

What is the primary purpose of a crane's counterweight?

Accepted Answer

To offset the load moment and improve crane stability

Answer

To increase the crane's travel speed on highways

Answer

To lower the crane's center of gravity during transport

Answer

To protect the engine from damage during heavy lifts

Question 4

When a mobile crane is traveling on a public road, the boom should typically be:

Accepted Answer

Positioned over the front of the carrier in the direction of travel

Answer

Raised to maximum angle to reduce overall length

Answer

Removed and transported separately on a flatbed truck

Answer

Fully extended to its maximum length to balance the crane

Question 5

What does 'tipping capacity' mean in crane operations?

Accepted Answer

The load at which the crane begins to tip over

Answer

The maximum speed before the crane becomes unstable

Answer

The amount of counterweight needed for a given lift

Answer

The load limit when operating on soft soil

Question 6

Which document provides the most authoritative information about a crane's lifting capacities for a given configuration?

Accepted Answer

The crane manufacturer's load chart for that crane model

Answer

OSHA 29 CFR 1926 Subpart CC regulations

Answer

The rigging company's standard operating procedures

Answer

ASME B30.5 standard for mobile and locomotive cranes