ISRO Draughtsman-B Mechanical Question Paper - 2016 (Set -1) with Answer Key

ISRO Draughtsman-B Mechanical Question Paper - 2016 (Set -1) with Answer Key

36) A circle of 100 mm dia is 'offset' by distance 10 mm in Autocad. The possible radius of the circle is

Answer is:

45

37) Developed area of the outer surface of a rectangular box of dimension lxbxh is

Answer is:

2(lxb+1xh+hxb)

38) A line is inclined to HP and parallel to VP. Then the true length of a line is represented in

Answer is:

Elevation

39) If hot steel is cooled rapidly, the austenite changes into

Answer is:

Martensite

Explanation:

If the hot steel is cooled rapidly the austenite changes into a new structure called ‘MARTENSITE’. This structure is very fine grained, very hard and magnetic. It is extremely wear-resistant and can cut other metals.

40) Tempering in steel is done to

Answer is:

36) A circle of 100 mm dia is 'offset' by distance 10 mm in Autocad. The possible radius of the circle is

45

37) Developed area of the outer surface of a rectangular box of dimension lxbxh is

2(lxb+1xh+hxb)

38) A line is inclined to HP and parallel to VP. Then the true length of a line is represented in

Elevation

39) If hot steel is cooled rapidly, the austenite changes into

Martensite

40) Tempering in steel is done to

increase toughness