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

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

51) The property of a metal by which it can be drawn to thin wire is called

Answer is:

Ductility

Explanation:

Ductility is a property of a material enabling it to be drawn into wires.
Malleability is a property of a material enabling it to be drawn into thin sheets.

The property of a metal by which it can be drawn to thin wire is called

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

Answer is:

Cast Iron

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

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)

Answer is:

74.50%

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

Answer is:

51) The property of a metal by which it can be drawn to thin wire is called

Ductility

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

Cast Iron

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