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ASVAB Exam Cram™ by Kalinda Reeves, Karl W. Riebs

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Mechanical Comprehension

Using the knowledge that you gained from Chapter 7, “Mechanical Comprehension,” choose one answer.

81.A man is using 60 lbs. of effort to lift a 240 lb. crate. What is the mechanical advantage in this situation?
  • A. MA=14400

  • B. MA=4

  • C. MA=0.25

  • D. MA=1

82.How much work does a 5 hp engine do per minute?
  • A. 33,000 ft_lb per minute

  • B. 110 ft_lb per minute

  • C. 2,750 ft_lb per minute

  • D. 165,000 ft_lb per minute

83.What force must you exert (vertically) on the handles of a wheelbarrow 4 feet from the axle of the wheel in order to lift a weight of 250 lbs. that is concentrated at a point 2 feet from the axle?
  • A. 75 lbs.

  • B. 125 lbs.

  • C. 250 lbs.

  • D. 4 lbs.

84.What is the pressure, in psi, of a tank of water that measures 8 feet square by 14 feet ...

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