ISRO Technician-B Turner Question Paper - 2019 (Set-1) with Answer Key

ISRO Technician-B Turner Question Paper - 2019 (Set-1) with Answer Key

36) Trepanning is a method used to

Answer is:

generate holes

Explanation:

Trepanning is an operation of producing a hole by removing metal along the circumference of a hollow cutting tool.

Trepanning is a method used to

37) The length of profile, selected for the purpose of making an individual measurement of surface texture is known as

Answer is:

Sampling length

38) You have been given an aluminium block in which hole is to be drilled. From the tool manufacturer's cutting speed chart, 77 m/min speed to be used for aluminium. The r.p.m to be used for 10 mm drill bit is

Answer is:

2450 rpm

39) The approximate depth of thread for M8 x 1 is

Answer is:

0.62 mm

40) General formula for the length of the snap-head rivet is (t - thickness of the joint to be riveted and d - diameter of the rivet)

Answer is:

t+1.5d

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