Page 376 - GMAT 2017b_Neatb

Mechanical Comprehension Test 1

26. When a load is hoisted by means of the tackle shown
above, the part that remains stationary is the
(A) load
(B) lower block
(C) lower hook
(D) upper block
BALL BALL

VALVE
30. The figure above shows a governor on a rotating
shaft. As the shaft speeds up, the governor balls will
CAM
move
(A) down
X
(B) upward and inward
Y
(C) upward
(D) inward
27. The figure above show a cam and a valve. For each cam
revolution, the vertical valve rise equals distance
(A) Y
(B) X ROD CRANK
(C) X plus Y PISTON
(D) twice X
TO ATMOSPHERE
31. The figure above shows a crank and piston. The
VALVE 1
piston moves from midposition to the extreme right if
the crank makes
1
(A) a turn
RIGHT 2
3
(B) a turn
VALVE 3 VALVE 4 VALVE 2 4
(C) 1 turn
1
(D) 1 turns
AIR TANK 2
50 LBS/SQ IN
Arrows shows clockwise turn

28. If all valves are closed at the start, in order to have air
Head
pressure from the tank move the pistons to the right, the
valves to be opened are
(A) 2 and 4
(B) 2, 3 and 4
(C) 1 and 2
(D) 1, 3 and 4

29. Automatic operation of a sump pump is controlled by Nut
the
(A) pneumatic switch
(B) float
(C) foot valve
(D) centrifugal driving unit 32. Referring to the figure above, which one of the
following statements is true?
(A) If the nut is held stationary and the head turned
clockwise, the bolt will move down.
(B) If the head of the bolt is held stationary and the
nut is turned clockwise, the nut will move down.

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