Page 378 - GMAT 2017b_Neatb

Mechanical Comprehension Test 1

effort
(A) 12
(B) 14
(C) 13
(D) 15 resistance
41. A characteristic of a rotary pump is Fulcrum
(A) a rapidly rotating impeller that moves the liquid L = 5¢ ¢
through the discharge piping.
(B) two gears, meshed together and revolving in
opposite directions that move the liquid to the
discharge pipe.
(C) valves that are required on the discharge side of
the pump.
(D) it is usually operated at high speeds up to 3,600
rpm.
44. In the figure shown above, what force must be
A applied to the 6-inch file scraper to pry up the lid of
the paint can? Assume that the average force holding
the lid is 50 pounds (disregard weight of file scraper)
B C
(A) 10 pounds
(B) 20 pounds
(C) 30 pounds
D (D) 40 pounds

BOX
42. In the diagram above, pulley A drives a system of
pulleys. Pulleys B and C are keyed to the same shaft. 1 2
Use the following diameters in your computations:
A = 1 inch; B = 2 inches; C = ½ inch; and D = 4 inches,
when pulley A runs at an rpm of 2,000, pulley D will
make
(A) 125 rpm
(B) 500 rpm 3 4
(C) 250 rpm 45. In the figure above, the flat sheet metal pattern that
(D) 8,000 rpm can be bent along the dotted lines to form the
completely closed triangular box is
(A) 1
(B) 3
(C) 2
(D) 4
A B
75 lbs

43. The weight is being carried entirely on the shoulders of
the two people shown above. Which person bears more
weight on the shoulder?
(A) A
(B) B
(C) Both are carrying the same weight
(D) It cannot be determined.

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