Mobile Crane Questions Test #2 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
When making a multiple crane lift it is important for the operator to understand that: -
CORRECT ANSWER The weight may increase if the other crane lands the load.
If a crane is not set-up level and the operator swings a load from the high side, the load radius
will: - CORRECT ANSWER Increase.
Most crane manufacturers reduce load capacity for duty-cycle operations because: - CORRECT
ANSWER Side-loading forces may occur.
On whose recommendations should preventative maintenance program be set-up: - CORRECT
ANSWER C rane manufacturer.
What is the standard rope used on most cranes? - CORRECT ANSWER Right regular lay.
The proper way to calibrate a boom angle indicator is: - CORRECT ANSWER Using a
level, raise the boom horizontal and set the indicator at 0º.
The red area of a instrument gauge means: - CORRECT ANSWER A dangerous condition
exists.
The best way to keep people from being injured from the counterweight of
crane is to: - CORRECT ANSWER Fence or barricade the tail swing area of the crane.
Only approved attachments or extra counterweights made by the manufacturer should be placed
on the rear of the crane because: - CORRECT ANSWER They could cause a backward
stability problem.
, What is the first thing an operator should do before going under a low pipe rack? - CORRECT
ANSWER Post a signal person to check clearance.
When working on outriggers, the only time they should be less than fully extended is when: -
CORRECT ANSWER There is a load chart for this operation.
When lifting loads from the water, the operator should be aware that: - CORRECT
ANSWER The load will increase when you pick the load from the water.
What is required to be on a hydraulic crane in order for it to lift a manbasket? - CORRECT
ANSWER Boom length indicator.
When working on rubber, cranes are rated at what percentage of tipping? - CORRECT
ANSWER 75%
When using cable or nylon spreaders it is important to remember: - CORRECT
ANSWER The lower the spreader angle to the horizontal, the greater the tension.
Backward stability of a crane is tested with: - CORRECT ANSWER Basic boom at
maximum angle with no load.
If not listed in the load/capacity charts for the hydraulic crane and you are in between boom
lengths, you should:: - CORRECT ANSWER Use the next longer or shorter length (the
lower capacity).
When spinning the load presents a danger, the operator should: - CORRECT
ANSWER Use a tagline.
The jib capacity is 8 tons and the ball weight 900 lbs. What is the heaviest net load that can be
lifted safely? - CORRECT ANSWER 15,100.
ACTUAL Exam Questions and CORRECT
Answers
When making a multiple crane lift it is important for the operator to understand that: -
CORRECT ANSWER The weight may increase if the other crane lands the load.
If a crane is not set-up level and the operator swings a load from the high side, the load radius
will: - CORRECT ANSWER Increase.
Most crane manufacturers reduce load capacity for duty-cycle operations because: - CORRECT
ANSWER Side-loading forces may occur.
On whose recommendations should preventative maintenance program be set-up: - CORRECT
ANSWER C rane manufacturer.
What is the standard rope used on most cranes? - CORRECT ANSWER Right regular lay.
The proper way to calibrate a boom angle indicator is: - CORRECT ANSWER Using a
level, raise the boom horizontal and set the indicator at 0º.
The red area of a instrument gauge means: - CORRECT ANSWER A dangerous condition
exists.
The best way to keep people from being injured from the counterweight of
crane is to: - CORRECT ANSWER Fence or barricade the tail swing area of the crane.
Only approved attachments or extra counterweights made by the manufacturer should be placed
on the rear of the crane because: - CORRECT ANSWER They could cause a backward
stability problem.
, What is the first thing an operator should do before going under a low pipe rack? - CORRECT
ANSWER Post a signal person to check clearance.
When working on outriggers, the only time they should be less than fully extended is when: -
CORRECT ANSWER There is a load chart for this operation.
When lifting loads from the water, the operator should be aware that: - CORRECT
ANSWER The load will increase when you pick the load from the water.
What is required to be on a hydraulic crane in order for it to lift a manbasket? - CORRECT
ANSWER Boom length indicator.
When working on rubber, cranes are rated at what percentage of tipping? - CORRECT
ANSWER 75%
When using cable or nylon spreaders it is important to remember: - CORRECT
ANSWER The lower the spreader angle to the horizontal, the greater the tension.
Backward stability of a crane is tested with: - CORRECT ANSWER Basic boom at
maximum angle with no load.
If not listed in the load/capacity charts for the hydraulic crane and you are in between boom
lengths, you should:: - CORRECT ANSWER Use the next longer or shorter length (the
lower capacity).
When spinning the load presents a danger, the operator should: - CORRECT
ANSWER Use a tagline.
The jib capacity is 8 tons and the ball weight 900 lbs. What is the heaviest net load that can be
lifted safely? - CORRECT ANSWER 15,100.
