MOBILE CRANE NCCER STUDY GUIDE EXAM QUESTIONS

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MOBILE CRANE NCCER STUDY GUIDE EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -56 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Crane hooks must not be twisted in excess of

Answer:

10 degrees-OSHA

• degrees- ASME

Question 2: rotation resistant wire rope cannot be used

Answer:

on boom hoisting systems

Question 3: Backward stability is tested with

Answer:

Basic boom at maximum angle with no load

Question 4: Before a spreader bar or beam can be used, they must be

Answer:

tested and approaved Question 5: How many broken wires must be present in one strand of one lay for running wire rope to be removed from service?

Answer:

3

Question 6: A trial lift with unoccupied personnel platform loaded must be:

Answer:

loaded at least with the anticipated weight Question 7: What is the minimum design factor required for a right regular lay main boom or auxiliary hoist rope?`

Answer:

3.5 Question 8: When using cable or nylon spreaders it is important to remember :

Answer:

the lower the spreader angle the greater the tension Question 9: In a range diagram boom length and angle can be used to determine:

Answer:

Load radius Question 10: When the number of layers of rope on a drum increase the :

Answer:

Allowable line pull decreases

Question 11: Parts of line means

Answer:

the number of lines running through the load block Question 12: Most crane manufacturers reduce the load capacity for duty-cycle operations because

Answer:

side loading forces may occur

Question 13: Jib back lash is how much?

Answer:

• degrees

Question 14: How does the operator determine if the correct load chart is being used?

Answer:

Matching serial numbers Question 15: How many broke wires in one strand in one lay of a wire rope slings will make it necessary to replace the sling?

Answer:

5 Question 16: If a jib is erected but not being used, it is treated as deduction from the crane's

Answer:

Gross capacity

Question 17: Wedge and sockets

Answer:

are the most common way of terminating wire rope on cranes

Question 18: By order of strength which is correct

Answer:

Basket, Vertical, Choker

Question 19: What do a jib and boom ext. have in common

Answer:

Increase height

Question 20: Eccentric main boom tip reeving casues

Answer:

twisting of the boom

Question 21: When working near power lines when is a signal person required?

Answer:

When crane moves within a booms length of power lines

Question 22: How does the operator verify the LMs boom length or load radius reading?

Answer:

accutal measurements

Question 23: What is the purpose of using a boom extension?

Answer:

Increase height Question 24: If the crane's jib is offset 5 degrees as opposed to an original 15 degrees and the boom angle remains constant you would expect the load radius to do what?

Answer:

To be reduced Question 25: Primary purpose for a roster sheave or auxiliary boom point sheave is to:

Answer:

Separate the hoist line Question 26: Rotation resistant wire rope must not have in excess of:

Answer:

• randomly broken wires in six wire rope diameters or 4 randomly broken wires in 30 wire rope.

Question 27: line pull is

Answer:

the amount of weight a drum will hoist for a given layer of wire rope

Question 28: lifting lugs should be used for straight, vertical lifting only

Answer:

True

Question 29: what does two beeps of the horn indicate to people in the area

Answer:

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