Common Mechanical Comprehension Practice Test 5

Question – 1

1. The third class lever is used to increase _________.

  • A. force or distance


  • B. force only


  • C. distance


  • D. None of the above


  • Answer:C

  • Answer Explanation:





Question – 2

2. ‘Liquids conform themselves to the shape of their container’ is the ________ principle of hydraulics.

  • A. first


  • B. second


  • C. third


  • D. fourth


  • Answer:B

  • Answer Explanation:





Question – 3

3. A man pushes a car with a force of 200N over a distance of 200 meters. The work done is ________.

  • A. 400 joules


  • B. 4000 joules


  • C. 40000 joules


  • D. 6000 joules


  • Answer:C

  • Answer Explanation:





Question – 4

4. If the normal force of an object is higher, the friction developed with the surface on which it rests is _______.

  • A. less


  • B. more


  • C. stable


  • D. less or more depending on the force


  • Answer:B

  • Answer Explanation:





Question – 5

5. In cemented carbides _______ is used as a binding material.

  • A. cobalt


  • B. nickel


  • C. cadmium


  • D. zinc


  • Answer:A

  • Answer Explanation:





Question – 6

6. ________ are used to lift cars.

  • A. Wrenches


  • B. Ratchets


  • C. Pullers


  • D. Mechanical jacks


  • Answer:D

  • Answer Explanation:





Question – 7

7. A ball thrown upwards starts travelling towards the ground after reaching a certain height. The downward movement of the ball is due to __________.

  • A. gravitational force


  • B. frictional force


  • C. the speed in which ball is thrown


  • D. centrifugal force


  • Answer:A

  • Answer Explanation:





Question – 8

8. By using a ________ mechanical advantage can be gained.

  • A. screw


  • B. protractor


  • C. lever


  • D. pump


  • Answer:C

  • Answer Explanation:





Question – 9

9. Dovetail is a kind of ______.

  • A. saw


  • B. lever


  • C. axle


  • D. screw


  • Answer:A

  • Answer Explanation:





Question – 10

10. If a car fails to start due to dead battery ______ can be used to get charge from another battery.

  • A. a new starter


  • B. jumper cables


  • C. fuels


  • D. fuses


  • Answer:B

  • Answer Explanation:





Question – 11

11. ________ is used for smoothing or leveling wood.

  • A. chisel


  • B. level


  • C. plane


  • D. clamp


  • Answer:C

  • Answer Explanation:





Question – 12

12. In an engine ________ is used in order to reduce friction.

  • A. water


  • B. gas


  • C. lubricating oil


  • D. None of these


  • Answer:C

  • Answer Explanation:





Question – 13

13. The mechanical advantage of a lever can be calculated using the formula _________.

  • A. effort / load


  • B. load /effort


  • C. load x effort


  • D. Both A and C


  • Answer:B

  • Answer Explanation:





Question – 14

14. In ideal fluid ______ is encountered by displacement.

  • A. high resistance


  • B. low resistance


  • C. no resistance


  • D. varying resistance


  • Answer:C

  • Answer Explanation:





Question – 15

15. Adding _______ can increase resistance to corrosion of steel.

  • A. sulphur and nickel


  • B. chromium and nickel


  • C. phosphorous


  • D. vanadium and zinc


  • Answer:B

  • Answer Explanation:





Score: 0/10



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