ASVAB Mechanical Comprehension Practice Test 3

Question – 1

1. A hoist can be used for _________.

  • A. cutting plastic

  • B. lifting objects

  • C. melting iron bars

  • D. making machineries

  • Answer:B

  • Answer Explanation:


Question – 2

2. Water can be transferred between two adjacent swimming pools by using a _________.

  • A. piston

  • B. pulley

  • C. siphon

  • D. hoist

  • Answer:C

  • Answer Explanation:


Question – 3

3. Liquid fuels have ________ solid fuels.

  • A. higher calorific value than

  • B. lower calorific value than

  • C. same calorific value as

  • D. no calorific value as

  • Answer:A

  • Answer Explanation:


Question – 4

4. __________ can be measured using an aneroid barometer.

  • A. Temperature

  • B. Atmospheric pressure

  • C. Viscosity

  • D. Weight

  • Answer:B

  • Answer Explanation:


Question – 5

5. Which of the following mechanical devices help in measuring the level of water in a tank?

  • A. Switch

  • B. Galvanometer

  • C. Float

  • D. Valve

  • Answer:C

  • Answer Explanation:


Question – 6

6. A micrometer is used to measure

  • A. microscopic objects

  • B. very small but not microscopic objects

  • C. large objects

  • D. objects of all sizes

  • Answer:B

  • Answer Explanation:


Question – 7

7. At normal temperature, the surface tension of water is __________ the surface tension of mercury.

  • A. less than

  • B. more than

  • C. equal to

  • D. varies depending on the quantity

  • Answer:A

  • Answer Explanation:


Question – 8

8. _________ force is produced when objects are rubbed.

  • A. Frictional

  • B. Gravitational

  • C. Centripetal

  • D. Centrifugal

  • Answer:A

  • Answer Explanation:


Question – 9

9. Torsion spring coil and uncoil produces a _________.

  • A. direct pull

  • B. twisting action

  • C. magnetic field

  • D. none of the above

  • Answer:B

  • Answer Explanation:


Question – 10

10. If two gears are of different sizes, they can mesh properly only if their teeth are _______.

  • A. of the same size

  • B. of different sizes

  • C. blunt edges

  • D. sharp edges

  • Answer:A

  • Answer Explanation:


Question – 11

11. ________ threads can be used in cases where power is transmitted in only one direction.

  • A. Square

  • B. Angle

  • C. Buttress

  • D. Acme

  • Answer:C

  • Answer Explanation:


Question – 12

12. When a material is heated, its toughness ________.

  • A. decreases

  • B. increases

  • C. remains constant

  • D. increases or decreases depending on the thickness of the material

  • Answer:A

  • Answer Explanation:


Question – 13

13. In a ________ bearing the length and diameter of the journal are equal.

  • A. long

  • B. square

  • C. triangle

  • D. short

  • Answer:B

  • Answer Explanation:


Question – 14

14. _________ energy is stored in hydraulic accumulator so that the stored energy can be supplied to a machine when required.

  • A. Potential

  • B. Kinetic

  • C. Kinematic

  • D. Pressure

  • Answer:D

  • Answer Explanation:


Question – 15

15. In gas turbines, _________ type rotary compressor is used.

  • A. centripetal

  • B. centrifugal

  • C. axial flow

  • D. radial flow

  • Answer:C

  • Answer Explanation:


Score: 0/10

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