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ISRO Technician-B
Fitter
ISRO Technician-B Fitter 2017
42

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

42) The thread angle for UNF thread is

30 degree

60 degree

55 degree

29 degree

Answer is:

60 degree

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

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

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

Thread size

Thread pitch

Taper lead

Type of thread

Answer is:

Taper lead

44) The taper in a taper pin reamer is

1 in 20

1 in 50

1 in 75

1 in 100

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?

11.65

12.35

11.7

12.05

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?

46) In oxy acetylene welding which gas is closed first to avoid back fire

Oxygen

Acetylene

Argon

Nitrogen

Answer is:

Acetylene

Explanation:

In oxy acetylene welding Acetylene gas is closed first to avoid back fire.

In oxy acetylene welding which gas is closed first to avoid back fire

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

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