Page 381 - GMAT 2017b_Neatb

Mechanical Comprehension Test 1

63. The figure above shows a bolt and nut and four
numbered pieces. If all of the pieces are long enough
to go through the bolt, and if the circular hole extends
through the other side of the nut, which piece must
you use to fix in a stationary position?
1 2 3
(A) 1
(B) 3
61. The figure above represents a pipe through which (C) 2
water is flowing in the direction of the arrow. There is a (D) 4
constriction in the pipe at the point indicated by the
64. Assume that a gear and pinion have a ratio of 3 : 1. If
number 2. Water is being pumped into the pipe at a
the gear is rotating at 300 revolutions per minute, the
constant rate of 350 gallons per minute. Of the
following, the most accurate statements is that speed of the pinion in revolutions per minute is most
(A) the velocity of the water at point 2 is the same as nearly
the velocity of the water at point 3. (A) 100
(B) a greater volume of water is flowing past point 1 (B) 900
in a minute than is flowing past point 2. (C) 300
(C) the velocity of the water at point 1 is greater than (D) 1,800
the velocity at point 2. 65. The wrecking bar is a first-class lever with curved
(D) the volume of water flowing past point 2 in a lever arms. In the following figure, what is the
minute is the same as the volume of water flowing theoretical mechanical advantage in using the
past point 1 in a minute. wrecking bar to tear the crate open?
3
4

2

1

62. Four gears are shown in the figure above. If gear 1 turns
as shown, then the gears turning in the same direction
are
(A) 2 and 3 2 1 ¢¢
(B) 2 and 4 2
(C) 3 and 4
(D) 2, 3, and 4.

(A) 3
(B) 4
1 (C) 5
(D) 6
2

3

4

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