ISRO Technician-B Fitter Question Paper - 2017 (Set - 1) with Answer Key

ISRO Technician-B Fitter Question Paper - 2017 (Set - 1) with Answer Key

41) The form of thread in a buttress thread is

Answer is:

Inclination of 0 degree on one side and 45 degree on the other side

The form of thread in a buttress thread is

42) The thread angle for UNF thread is

Answer is:

60 degree

43) The first tap, second tap and bottoming tap differ in their

Answer is:

Taper lead

44) The taper in a taper pin reamer is

Answer is:

1 in 50

45) A hole is to be made on mild steel with a 12 mm diameter reamer. If the under size is 0.3 mm and if the oversize is 0.05mm, what will be the diameter of the drill for drilling the hole before reaming?

Answer is:

11.65

A hole is to be made on mild steel with a 12 mm diameter reamer. If the under size is 0.3 mm and if the oversize is 0.05mm, what will be the diameter of the drill for drilling the hole before reaming?

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