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