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Fitter
Fitter Set-2
Drilling
72

Drilling MCQ with Answers

72) What 46 represent in standard marking system of grinding wheel (32A46H8V)?

Grade

Grain size

Type of bond

Type of abrasive

Answer is:

Grain size

Drilling MCQ with Answers

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Related Drilling MCQ with Answers

73) What is the colour of aluminium metal?

Dull white

White

Bright white

Bluish grey colour

Answer is:

White

74) What H denotes in the specifications of grinding wheel 32A46H8V?

Grain size

Type of abrasive

Grade

Structure

Answer is:

Grade

What H denotes in the specifications of grinding wheel 32A46H8V?

75) Why precision instruments are made of invar steel?

Durability

Cheaper in cost

Surface finishing is fine

Least coefficient of expansion

Answer is:

Least coefficient of expansion

76) Why lime stone serves as flux added to the ore in the blast furnace?

To form molter slag

To supply the oxygen

To burn the carbon in coke

To increase the melting point of ore

Answer is:

To form molter slag

Why lime stone serves as flux added to the ore in the blast furnace?

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