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BSEP ASVAB/ AFCT Mechanics With Questions And Answers
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BSEP ASVAB/ AFCT Mechanics With Questions And Answers
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BSEP ASVAB/ AFCT Mechanics WithQuestions And Answers
When a load is hoisted by means of the tackle shown above, the part that remains
stationary is the - Answer - Because the upper block is connected to an immovable
hook, it must remain stationary
The figure above shows a cam and a valve. For each cam revolution, the vertical valve
rise equals distance - Answer - The distortion of the cam causes the valve to rise when
contact is made. The amount of this distortion is the length Y.
If all valves are closed at the start, in order to have air pressure from the tank move the
pistons to the right, the valves to be opened are - Answer - To move the pistons to the
right, valves 1, 3, and 4 must be open. Valve 4 permits the air to enter the system; valve
3 allows the air to hit the left side of the piston; and valve 1 is an exhaust channel for the
air.
Automatic operation of a sump pump is controlled by the - Answer - When the water
level rises past the safe area, the float turns on the sump pump. When the level of water
in the sump goes down, the float also goes down and will shut off the sump pump.
The figure above shows a governor on a rotating shaft. As the shaft speeds up, the
governor balls will move - Answer - The centrifugal force acts to pull the balls outward.
Since the two balls are connected to a yolk around the center bar, this outward motion
pulls the balls upward
The figure above shows a crank and piston. The piston moves from mid-position to the
extreme right if the crank makes - Answer - The piston is now in part of the compression
stroke; 14 turn will move it to full compression; 12 more turn will move it to the end of
the power stroke. Adding 14+12=34 turn.
Referring to the figure above, which one of the following statements is true? - Answer -
To tighten the bolt, turn it counterclockwise. To tighten the nut on the bolt the reverse is
true—turn it clockwise.
Which hydraulic press requires the LEAST force to lift the weight? - Answer - Pressure
is defined as Force Area. For a given force, 20 lbs, the smaller the area, the greater the
pressure produced. The smallest area is at position A, requiring the least force to lift the
weight.
The try-cocks of steam boilers are used to - Answer - The try-cocks show the level of
the water inside the boiler. They use the principle that water seeks its own level in a
system.
In the case of the standard flanged pipe shown above, the maximum angle through
which it would be necessary to rotate the pipe in order to line up the holes is - Answer -
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