Mobile Crane Core Practice Exam (2025/2026
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Verified Study Guide
Load chart capacities distinguished in bald type, marked with an asterisk, in a shaded
area, or above a bold line of the capacity chart are based on:
(a) net capacity
(b) dynamic loads
(c) structural strength
(d) tipping - correct answer(c) structural strength
The proper way to calibrate a boom angle indicator is:
(a) Use a protractor
(b) dynamic loads
(c) boom up against the and set the indicator at 90
(d) boom up or down so boom is horizontal, and level than set - correct answer(d) boom
up or down so boom is horizontal, and level than set
In what case is someone allowed to make modifications to the crane?
(A) When the operator approves it
(B) When a competent person approves it
(C) When manufacturer approves it in writing
(D) If crane was built before January 1978. - correct answer(C) When manufacturer
approves it in writing
What would be the effect of moving the tipping axis closer to the cranes center of
gravity?
(A) Longer working radius
(B) Greater stability
(C) Greater capacity
(D) Reduced stability - correct answer(D) Reduced stability
Which of the following matches the appropriate load chart to a particular crane?
(A) Serial number
(B) Model number
(C) Make of crane
(D) Make & model number - correct answer(A) Serial number
A durable rating chart with legible letters and figures shall be provided with each crane
and attached in a location accessible to:
(A) The site safety supervisor
,(B) The lift director
(C) The project engineer
(D) The operator while at the controls - correct answer(D) The operator while at the
controls
The lifting capacities listed in the load chart assume that:
(A) the lift is to be performed under ideal conditions.
(B) the crane may be out of level by 3%.
(C) winds up to 15 mph may be present.
(D) extreme temperatures may be present. - correct answer(A) the lift is to be performed
under ideal conditions.
A "rough terrain crane set up on outriggers that is based on 85% tipping should have
the tires:
(A) on the ground.
(B) lightly touching the ground.
(C) inflated.
(D) off the supporting surface. - correct answer(D) off the supporting surface.
Load charts are based on stationary loads, which are also known as:
(A) Net loads
(B) Gross loads
(C) Dynamic loads
(D) Static loads - correct answer(D) Static loads
The capacities in a mobile crane's load chart are based on either structural or:
(A) net capacities
(B) speed
(C) boom
(D) stability - correct answer(D) stability
The values listed in the manufacturer's load chart show:
(A) rated capacities.
(B) duty cycle capacities.
(C) gross loads.
(D) net capacities. - correct answer(A) rated capacities.
Net capacity is:
(A) manufactures load ratings minus capacity deductions.
(B) net load minus gross capacity.
(C) net load plus gross capacity.
(D) capacity deductions minus gross capacity - correct answer(A) manufactures load
ratings minus capacity deductions.
When determining the "gross load" the best method is:
(A) calculate the approximate load weight.
, (B) use a load moment indicator.
(C) guess the approximate load weight and add the rigging.
(D) get an accurate load weight and add the rigging. - correct answer(D) get an
accurate load weight and add the rigging.
The weights of load handling devices, such as load blocks, spreader bars, and slings
are considered:
(A) part of the load.
(B) in the work area diagram.
(C) in the working range diagram.
(D) considered in calculating the net load. - correct answer(A) part of the load.
Gross capacity is 10,300 lbs. total deductions are 7,622 lbs. What is the net capacity?
(A) 2,678 lbs.
(B) 2,568 lbs.
(C) 2,688 lbs.
(D) 3,678 lbs. - correct answer(A) 2,678 lbs.
Boom length is measured from the:
(A) Base of the boom to the boom tip
(B) Crane center pin to the boom tip
(C) Center of the heel pin(s) to the center of the boom tip sheaves
(D) Hoist drum to the boom tip - correct answer(C) Center of the heel pin(s) to the
center of the boom tip sheaves
The boom angle indicator indicates the booms angle to the:
(A) Crane
(B) Horizontal
(C) Vertical
(D) Ground - correct answer(B) Horizontal
Load radius is defined as: the horizontal distance from the centerline of rotation to the
centerline of the vertical ha line with:
(A) no load on the hook.
(B) the rated load suspended.
(C) the rigging not Included.
(D) 95% load on the hook. - correct answer(B) the rated load suspended.
You are lifting directly under the hook. As you put tension on it and away from the
crane. What caused the increase in load radius as should place?
(A) Boom deflection
(B) Change in the weather
(C) Boom twist
(D) Side loading - correct answer(A) Boom deflection
Latest Update) | Complete Practice Q&A PDF |
Verified Study Guide
Load chart capacities distinguished in bald type, marked with an asterisk, in a shaded
area, or above a bold line of the capacity chart are based on:
(a) net capacity
(b) dynamic loads
(c) structural strength
(d) tipping - correct answer(c) structural strength
The proper way to calibrate a boom angle indicator is:
(a) Use a protractor
(b) dynamic loads
(c) boom up against the and set the indicator at 90
(d) boom up or down so boom is horizontal, and level than set - correct answer(d) boom
up or down so boom is horizontal, and level than set
In what case is someone allowed to make modifications to the crane?
(A) When the operator approves it
(B) When a competent person approves it
(C) When manufacturer approves it in writing
(D) If crane was built before January 1978. - correct answer(C) When manufacturer
approves it in writing
What would be the effect of moving the tipping axis closer to the cranes center of
gravity?
(A) Longer working radius
(B) Greater stability
(C) Greater capacity
(D) Reduced stability - correct answer(D) Reduced stability
Which of the following matches the appropriate load chart to a particular crane?
(A) Serial number
(B) Model number
(C) Make of crane
(D) Make & model number - correct answer(A) Serial number
A durable rating chart with legible letters and figures shall be provided with each crane
and attached in a location accessible to:
(A) The site safety supervisor
,(B) The lift director
(C) The project engineer
(D) The operator while at the controls - correct answer(D) The operator while at the
controls
The lifting capacities listed in the load chart assume that:
(A) the lift is to be performed under ideal conditions.
(B) the crane may be out of level by 3%.
(C) winds up to 15 mph may be present.
(D) extreme temperatures may be present. - correct answer(A) the lift is to be performed
under ideal conditions.
A "rough terrain crane set up on outriggers that is based on 85% tipping should have
the tires:
(A) on the ground.
(B) lightly touching the ground.
(C) inflated.
(D) off the supporting surface. - correct answer(D) off the supporting surface.
Load charts are based on stationary loads, which are also known as:
(A) Net loads
(B) Gross loads
(C) Dynamic loads
(D) Static loads - correct answer(D) Static loads
The capacities in a mobile crane's load chart are based on either structural or:
(A) net capacities
(B) speed
(C) boom
(D) stability - correct answer(D) stability
The values listed in the manufacturer's load chart show:
(A) rated capacities.
(B) duty cycle capacities.
(C) gross loads.
(D) net capacities. - correct answer(A) rated capacities.
Net capacity is:
(A) manufactures load ratings minus capacity deductions.
(B) net load minus gross capacity.
(C) net load plus gross capacity.
(D) capacity deductions minus gross capacity - correct answer(A) manufactures load
ratings minus capacity deductions.
When determining the "gross load" the best method is:
(A) calculate the approximate load weight.
, (B) use a load moment indicator.
(C) guess the approximate load weight and add the rigging.
(D) get an accurate load weight and add the rigging. - correct answer(D) get an
accurate load weight and add the rigging.
The weights of load handling devices, such as load blocks, spreader bars, and slings
are considered:
(A) part of the load.
(B) in the work area diagram.
(C) in the working range diagram.
(D) considered in calculating the net load. - correct answer(A) part of the load.
Gross capacity is 10,300 lbs. total deductions are 7,622 lbs. What is the net capacity?
(A) 2,678 lbs.
(B) 2,568 lbs.
(C) 2,688 lbs.
(D) 3,678 lbs. - correct answer(A) 2,678 lbs.
Boom length is measured from the:
(A) Base of the boom to the boom tip
(B) Crane center pin to the boom tip
(C) Center of the heel pin(s) to the center of the boom tip sheaves
(D) Hoist drum to the boom tip - correct answer(C) Center of the heel pin(s) to the
center of the boom tip sheaves
The boom angle indicator indicates the booms angle to the:
(A) Crane
(B) Horizontal
(C) Vertical
(D) Ground - correct answer(B) Horizontal
Load radius is defined as: the horizontal distance from the centerline of rotation to the
centerline of the vertical ha line with:
(A) no load on the hook.
(B) the rated load suspended.
(C) the rigging not Included.
(D) 95% load on the hook. - correct answer(B) the rated load suspended.
You are lifting directly under the hook. As you put tension on it and away from the
crane. What caused the increase in load radius as should place?
(A) Boom deflection
(B) Change in the weather
(C) Boom twist
(D) Side loading - correct answer(A) Boom deflection
