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Mechanical Comprehension Test 1

MECHANICAL COMPREHENSION TEST 1

100 QUESTIONS
60 MINUTES

This is a test of your knowledge of electrical, radio, and electronics
information. You are to select the correct response from the choices
given. Then mark the space on your answer sheet that has the same
number and letter as your choice.

NUT A
NUT B
PIVOT

1

STOP NUT C ARM
2
FLOOR 3. The arm in the figure above is exactly balanced as
shown. If nut A is removed entirely, then, in order to
rebalance the arm, it will be necessary to turn nut.
(A) C toward the right
1. The figure above represent a pulley, with practically no
friction, from which two 10-pound weights are (B) C toward the left
suspended as indicated. If a downward force is applied (C) B up
to weight 1, it is most likely that weight 1 will (D) B down
(A) come to rest at the present level of weight 2
(B) move downward until it is level with weight 2 4. The purpose of an air valve in a heating system is to
(C) move downward until it reaches the floor (A) prevent pressure from building up in a room due
(D) pass weight 2 in its downward motion and then to the heated air.
return to its present position. (B) relieve the air from stream radiators.
INLET (C) allow excessive steam pressure in the boiler to
escape to the atmosphere.
OPEN (D) control the temperature in the room.
TANK
ARM DISC

1-INCH DIAMETER 2-INCH DIAMETER
OUTLET OUTLET

5. The figure above shows a slotted disc turned by a pin
2. Eight gallons of water per minute are flowing at a
given time from the 1-inch outlet in the tank shown on a rotating arm. One revolution of the arm turns the
above. What is the amount of water flowing at that time disc
from the 2-inch outlet? (A) 1 turn
(A) 64 gallons per minute 4
(B) 32 gallons pe r minute (B) 1 turn
(C) 16 gallons per minute 2
(D) 2 gallons per minute (C) 3 turn
4
(D) one complete turn

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