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Mobile Crane Questions Test #1
Questions and Answers 100% Pass
Where is the best location for leveling a crane? - ANSWER ✔✔-Upperworks.
When determining the gross load the best method is? - ANSWER ✔✔-Get an accurate load weight and
add the rigging.
By order of hitch strength, which is the correct answer? - ANSWER ✔✔-Basket, vertical, choker.
What is the primary purpose of using a jib? - ANSWER ✔✔-Increase height.
When taking a side strain on a boom, what concerns the operator most? - ANSWER ✔✔-Boom damage.
You should always have how many wraps on a hoist drum? - ANSWER ✔✔-2.
On a load chart, values above the load line mean: - ANSWER ✔✔-Capacities based on structural
competence.
The primary purpose for a rooster sheave or auxiliary boom point sheave is to: - ANSWER ✔✔-Separate
the hoist lines.
What is the proper procedure when using an insulating link or a boot near power lines? - ANSWER ✔✔-
Be sure to maintain the correct allowable distance from the lines.
When the number of layers of rope on a drum increases the:: - ANSWER ✔✔-Allowable line pull
increases.
Created by ©EmilyCharlene 2025. All rights reserved.
, 2|Page
What is the minimum allowable distance from the crane and power-lines up to 50kV? - ANSWER ✔✔-10
ft.
The term "Upperworks" or "Superstructure" refers to the area of the crane: - ANSWER ✔✔-Above the
turntable.
Side-loading may be caused by: - ANSWER ✔✔-Starting or stopping the swing too rapidly.
What is the best procedure to follow when underground utilities may be present? - ANSWER ✔✔-
Contact local utility company.
Eccentric main boom tip reeving causes: - ANSWER ✔✔-Twisting of the boom.
How many randomly broken wires would be cause to remove a running wire rope from service -
ANSWER ✔✔-6
When lifting personnel in a manbasket using 6 x 19 wire rope, the minimum safety factor is? - ANSWER
✔✔-7
What is the safety factor required when using non-rotating wire rope and lifting in a manbasket? -
ANSWER ✔✔-10
Who has the responsibility for determining the correct weight of a load? - ANSWER ✔✔-Supervisor
When working near powerlines when is a signal person required? - ANSWER ✔✔-When crane moves
within booms length of powerlines.
When an operator leaves the crane, he must first: - ANSWER ✔✔-Put the load on the ground and put all
dogs or pawls in.
If replacing the hoist line wire rope on a crane, how do you determine the size or type of wire rope to
use? - ANSWER ✔✔-Use manufacturer's operators manual or load chart.
Created by ©EmilyCharlene 2025. All rights reserved.
Mobile Crane Questions Test #1
Questions and Answers 100% Pass
Where is the best location for leveling a crane? - ANSWER ✔✔-Upperworks.
When determining the gross load the best method is? - ANSWER ✔✔-Get an accurate load weight and
add the rigging.
By order of hitch strength, which is the correct answer? - ANSWER ✔✔-Basket, vertical, choker.
What is the primary purpose of using a jib? - ANSWER ✔✔-Increase height.
When taking a side strain on a boom, what concerns the operator most? - ANSWER ✔✔-Boom damage.
You should always have how many wraps on a hoist drum? - ANSWER ✔✔-2.
On a load chart, values above the load line mean: - ANSWER ✔✔-Capacities based on structural
competence.
The primary purpose for a rooster sheave or auxiliary boom point sheave is to: - ANSWER ✔✔-Separate
the hoist lines.
What is the proper procedure when using an insulating link or a boot near power lines? - ANSWER ✔✔-
Be sure to maintain the correct allowable distance from the lines.
When the number of layers of rope on a drum increases the:: - ANSWER ✔✔-Allowable line pull
increases.
Created by ©EmilyCharlene 2025. All rights reserved.
, 2|Page
What is the minimum allowable distance from the crane and power-lines up to 50kV? - ANSWER ✔✔-10
ft.
The term "Upperworks" or "Superstructure" refers to the area of the crane: - ANSWER ✔✔-Above the
turntable.
Side-loading may be caused by: - ANSWER ✔✔-Starting or stopping the swing too rapidly.
What is the best procedure to follow when underground utilities may be present? - ANSWER ✔✔-
Contact local utility company.
Eccentric main boom tip reeving causes: - ANSWER ✔✔-Twisting of the boom.
How many randomly broken wires would be cause to remove a running wire rope from service -
ANSWER ✔✔-6
When lifting personnel in a manbasket using 6 x 19 wire rope, the minimum safety factor is? - ANSWER
✔✔-7
What is the safety factor required when using non-rotating wire rope and lifting in a manbasket? -
ANSWER ✔✔-10
Who has the responsibility for determining the correct weight of a load? - ANSWER ✔✔-Supervisor
When working near powerlines when is a signal person required? - ANSWER ✔✔-When crane moves
within booms length of powerlines.
When an operator leaves the crane, he must first: - ANSWER ✔✔-Put the load on the ground and put all
dogs or pawls in.
If replacing the hoist line wire rope on a crane, how do you determine the size or type of wire rope to
use? - ANSWER ✔✔-Use manufacturer's operators manual or load chart.
Created by ©EmilyCharlene 2025. All rights reserved.
