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ISRO Technician-B Fitter 2019
44

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

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

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

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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

47) For turning lengthy tapers with a small taper angle, the method of taper turning employed is

offsetting the tailstock

form tool plunging

swiveiling the compound slide

Combination of the lathe cross slide and the compound slide movement

Answer is:

offsetting the tailstock

Explanation:

For turning lengthy tapers with a small taper angle, the method of taper turning employed is offsetting the tailstock.

48) For the same cutting speed larger diameter drills will have _____ rpm compared to smaller diameter drills

Higher

Same

Lesser

None of the above

Answer is:

Lesser

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

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44) Helix angle in twist drill determines the

Rake Angle

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

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

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?

10 m/min

46) For taper turning and boring

The tool should be set exactly at the centre

47) For turning lengthy tapers with a small taper angle, the method of taper turning employed is

offsetting the tailstock

48) For the same cutting speed larger diameter drills will have _____ rpm compared to smaller diameter drills

Lesser

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