Exam (elaborations)
MA Hoisting License 2A Questions and Answers
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MA Hoisting License 2A
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MA Hoisting License 2AWho is responsible for inspecting the trench daily? - answer The Operator
What does the swing motor do? - answer Rotates the main frame
True or False- The tench box must extend 18" above the excavation when trenching on
a slope - answer True
What is the optimal ratio for antifreeze in a diesel engine? - answer50/50
True or False- Hydraulic hoses can be tightened under pressure - answer False
What is the most important thing you should know about the load you are picking up? -
answerIt's weight
True or False- The hydraulic system is a high pressure system - answerTrue
What is the weakest part of the hydraulic system? - answerThe hoses
What is the function of the hydraulic tank in a hydraulic system?
A. Supply
B. Expansion
C. Cooling
D. All of the above - answerD. All of the above
What agency must notify a utility company that excavation marks need to be made? -
answerDig Safe
If a person is operating equipment with no license in their possession, it's a violation of...
A. Law
B. Regulation
C. Regulation and Law
D. None of the above - answerC. Regulation and Law
True or False- If someone is operating hoisting equipment without a hoisting license,
they must notify the DPS with a drivers license - answerFalse
What does the hydraulic relief valve do?
A. slow the swing
B. Improve digging
C. prevent accidents
D. None of the above - answerD. None of the above
, What is the optimal safe angle for lift? - answer90 degrees
What is the max outer markings for Dig Safe? - answer50 feet
What is the steepest incline that is acceptable as protection against a collapse? -
answerMaximum allowable slope
Before lifting a load with an excavator, what should you do first? - answerKnow the
weight of what is to be lifted, make sure the machine is rated to handle the load, inspect
the machine to make sure there is no danger or defects, make sure the machine is on
level and stable ground
According to OSHA, who must inspect excavations/trenches before employees enter -
answerThe Competent person
Why should the operator take care not to let a diesel engine run out of fuel? -
answerWhen you run out of fuel or change the filter, air is trapped. When you try to start
the engine this air acts as a lock (vapor lock) preventing the normal supply of fuel,
creating the need to bleed the system and or injectors
What are boom locks used for? - answerTo lock the boom in an up and centered
position during transportation. Hydraulics can bleed down and allow boom rotation or
drop
Dig Safe markings shall extend how many feet beyond the boundaries of the pre
marked Dig Safe area? - answer15 feet
Chain slings or chain links should be made of what grade alloy steel? - answerGrade 8
or better
What is the tipping axis of a forklift? - answerIt could be the front axle known as the
pivot point or at what point on the machine the unit will tip
Ex: side, rear, or front
What statement would NOT be found in 520 CMR 6.00? - answerIf an employee goes
home sick, no one else is allowed to operate the machine that he was operating
What is the preferred sling angle of these angles?
- 60 degrees
- 45 degrees
- 30 degrees - answer60 degrees
The top of the spoil pile is called the...? - answerCrown
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