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ISRO Technician-B
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ISRO Technician-B Fitter 2019
42

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

42) If the recommended cutting speed of mild steel is 20 m/min, what is the rotational speed (rpm) required for a 020 mm drill bit.

320 rpm

1050 rpm

120 rpm

2100 rpm

Answer is:

320 rpm

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

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

43) The angle of the prick punch used for witness marks is

90 degree

60 degree

30 degree

100 degree

Answer is:

60 degree

44) Helix angle in twist drill determines the

Clearance angle

Rake Angle

Point angle

Inclination

Answer is:

Rake Angle

Helix angle in twist drill determines the

45) For a turning operation, if the spindle speed is 128 rpm and the diameter of the rod is 25 mm, what is the cutting speed?

100 m/min

10 m/min

20 m/min

25 m/min

Answer is:

10 m/min

46) For taper turning and boring

The tool should be set below the centre

The tool should be set above the centre

The tool should be set exactly at the centre

The tool should be set near to the centre

Answer is:

The tool should be set exactly at the centre

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

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