Page 383 - GMAT 2017b_Neatb

Mechanical Comprehension Test 1

71. To open the valve in the figure above once every
second, the wheel must rotate at
(A) 6 rpm
(B) 10 rpm
(C) 20 rpm
(D) 30 rpm
72. To stop a faucet from dripping, your fiest act should be
to replace the
(A) cap nut
(B) seat.
(C) washer. 20 teeth 10 teeth
(D) spindle
Open to air 75. There are twenty teeth on the front sprocket and ten
1 WIRE 2 3 4 teeth on the rear sprocket on the bicycle above. Each
R M
time the pedals go round, the rear wheel will go
G S
(A) halfway around.
(B) around once.
7 6 5
(C) around twice.
73. In the figure above, assume that all valves are closed. (D) around four times.
For air flow from R through G and then through S to M, 12¢¢
open valves 12¢¢
(A) 7, 6, and 5 30 lbs.
(B) 7, 3, and 4
(C) 7, 6, and 4 2 lb. Board
(D) 7, 3, and 5
Silver
Wood Steel

identical weighing scales

76. In the figure shown above, the weight held by the
board and placed on the two identical scales will
cause each scale to read
(A) 8 pounds
(B) 15 pounds
(C) 16 pounds
(D) 32 pounds

74. Which spoon above is hottest?
(A) Wood
(B) Silver
(C) Steel
(D) Silver and steel are equally hot.

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