Mobile Crane Questions Test #1
Questions and Answers 100%
Correct
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.
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.
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.
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 an operator arrives at the jobsite and the crane is already erected, how would
the operator check the main and auxiliary hoist brakes? - ANSWER - Lift the load off
the ground and apply the brake.
What is the difference between an Anti-two-block warning device and an Anti-two-
block? - ANSWER - Warning device only warns, but prevention systems will stop the
operation.
Questions and Answers 100%
Correct
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.
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.
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.
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 an operator arrives at the jobsite and the crane is already erected, how would
the operator check the main and auxiliary hoist brakes? - ANSWER - Lift the load off
the ground and apply the brake.
What is the difference between an Anti-two-block warning device and an Anti-two-
block? - ANSWER - Warning device only warns, but prevention systems will stop the
operation.
