Welcome to your Mobile Crane Operator Practice Test. Take the test and find out how well prepared you are!

1

By order of sling capacity, which is the correct answer from highest to lowest?

Vertical, basket, choker

Basket, vertical, choker

Basket, choker, vertical

Choker, basket, vertical

2

You should always have at least how many wraps on a hoist drum?

5

2

3

1

3

What is the minimum allowable distance from the crane and power lines under 50kv according to 1926.1400?

25 ft.

10 ft.

20 ft.

4

Eccentric main boom tip reeving causes:

Increased sheave wear

Increased wire rope wear

Twisting of the boom

Increased jib capacity

5

When lifting personnel in a manbasket using 6 X 19 wire rope, the minimum safety factor is?

3.5

5

7

10

6

What is the safety factor required when using rotation resistant wire rope and lifting personnel in a manbasket?

3.5

5

7

10

7

When working near power lines, when is a signal person required?

When crane moves within 10 ft. of power lines

When crane moves within 15 ft. of power lines

When crane moves within a boom's length of limit of approach

When crane moves within a jib's length of power lines

8

According to ASME B30.23, personnel platform lifts should not be made with wind in excess of:

30 mph

10 mph

15 mph

20 mph

9

What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope?

5

3.5

2.5

7

10

If the SWL of a crane's wire rope is 10,000 lbs using one part, what is the SWL when using 4 parts?

10,000 lbs.

20,000 lbs.

30,000 lbs.

40,000 lbs.

11

What is the minimum pitch diameter for load hoist drum?

Not less than 15 times rope diameter

Not less than 16 times rope diameter

Not less than 18 times rope diameter

Not less than 20 times rope diameter

12

“Working radius” is defined as the distance from the:

Base of the boom to the center of the load.

Front of the crane to the center of gravity of the load.

Center of rotation of the crane to the center of the load.

Center of rotation of the crane to the center of gravity of the load.

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NCCCO Mobile Crane Operator Certification Practice Test

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