Mobile Crane Exam Prep (2023/ 2024 Update) Questions and Verified Answers| 100% Correct

Mobile Crane Exam Prep (2023/ 2024

Update) Questions and Verified Answers|

100% Correct

Q: Eccentric main boom tip reeving causes which of the following:

Answer:

twisting of the main boom

Q: which type of wire rope listed below is installed on MOST cranes?

a. right regular lay

b. right alternate lay

c. left regular lay

d. left alternate lay

Answer:

a. right regular lay

Q: The hoist drum flange shall extend a minimum of _______ over the top layer of wire rope at

all times while crane is in operation.

a. 1/2 inch

b. 1 inch

c. 1 1/2 inch

d. 2 inch

Answer:

1/2 inch

Q: Which type of wire rope listed below is installed on most cranes?

a. main hoist line

b. boom hoist line

c. Auxiliary hoist line

d. pendant line

Answer:

pendant line

Q: when lifting on outriggers, the floats or pads should always be:

a. sufficient to support three times the applies load

b. raised to touch the tires firmly on the ground

c. secured to the outriggers cylinder

d. secured to the mats

Answer:

secured to the outriggers cylinder

Q: on a mobile crane, how many broken wires are permitted at the connection of a pendant

before it must be taken out of service?

a. 6

b. 5

c. 3

d. 1

Answer:

1

Q: How many randomly broken wires in a lay length must there be on a mobile cranes hoist

line, before it should be removed from service?

a. 4

b. 3

c. 5

d. 6

Answer:

6

Q: what is the minimum design (unless rotation resistant) factor required for a right regular lay,

boom or hoist wire rope?

a. 5

b. 3.5

c. 2.5

d. 7

Answer:

3.5

Q: Type 1 rotation resistant hoist wire rope has a design factor of:

a. 2.5 to 1

b. 3 to 1

c. 3.5 to 1

d. 5 to 1

Answer:

5 to 1

Q: it is important to know when lubricating crane hoist wire rope, that the lubricant must:

a. not hinder visual inspection

b. not be applied in direct sunlight

c. not be applied prior to use

d. not be applied to regular lay wire rope

Answer:

not hinder visual inspection

Q: how often is the competent person required to inspect the running wire ropes on a mobile

wire?

a. each shift

b. each year

c. each week

d. each month

Answer:

each shift

Q: On mobile cranes, how many broken wires must be present in one strand of one lay for

running wire rope removed from service?

A. 3

B. 1

C. 2

D. 0

Answer:

3

Q: How many randomly distributed broken wires in rotation-resistant hoist wire ropes

considered for replacement?

A. 1 broken wire in 6 rope diameters

B. 2 broken wires in 30 rope diameters

C. 3 broken wires in one strand in one lay

D. 2 broken wires in 6 rope diameters

Answer:

2 broken wires in one strand in 6 rope diameters

Q: According to OSHA, what is the minimum number of full wraps of wire rope that must

remain on hoist drums in all service conditions?