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ISRO Draughtsman-B
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ISRO Draughtsman-B Mechanical 2019
52

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

52) Which of the following is having the highest percentage of carbon?

Wrought Iron

Cast Iron

Low carbon Steel

High Carbon Steel

Answer is:

Cast Iron

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

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53) In a simple screw jack, the pitch of the screw is 0.5 cm and length of the lever is 25 cm. The velocity ratio of the machine is

10 Pi

100 Pi

20 Pi

25 Pi

Answer is:

100 Pi

In a simple screw jack, the pitch of the screw is 0.5 cm and length of the lever is 25 cm. The velocity ratio of the machine is

54) The efficiency of a motor that receives 4 KW and delivers 4 HP is (1 HP = 745 W)

80%

70%

37.25%

74.50%

Answer is:

74.50%

55) As a pendulum swings from its highest to the lowest position, what happens to it kinetic and potential energy

Both potential energy and kinetic energy decrease

Potential energy increases and kinetic energy decreases

Potential energy decreases and kinetic energy increases

Both potential energy and kinetic energy increase

Answer is:

Potential energy decreases and kinetic energy increases

56) Mass of 160000 cubic millimeter stone is 0.4 kg. Density of the material is

0.0025 gm/cc

2.5 gm/cc

0.025 gm/cc

0.25 gm/cc

Answer is:

2.5 gm/cc

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

For more MCQ's Click Here

52) Which of the following is having the highest percentage of carbon?

Cast Iron

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

Related ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

53) In a simple screw jack, the pitch of the screw is 0.5 cm and length of the lever is 25 cm. The velocity ratio of the machine is

100 Pi

54) The efficiency of a motor that receives 4 KW and delivers 4 HP is (1 HP = 745 W)

74.50%

55) As a pendulum swings from its highest to the lowest position, what happens to it kinetic and potential energy

Potential energy decreases and kinetic energy increases

56) Mass of 160000 cubic millimeter stone is 0.4 kg. Density of the material is

2.5 gm/cc

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key