The symbol conventionally used for resinoid bond is

90) A grinding wheel is marked : 51 A 46 L 5 V -23. Here what does 5 denote ?

Answer is:

Structure

Explanation:

Structure indicates the amount of bond present between the individual abrasive grains and the closeness of the individual grains to each other. An open structure wheel will cut more freely. That is, it will remove more metal in a given time and produce less heat. It will not produce such a good finish as a closely structured wheel.

91) Balancing of wheel is done to

Make the sides of the wheel parallel

Make the outside diameter concentric with the bore

Equalize the weight in every position of the wheel

None of the above

Answer is:

Equalize the weight in every position of the wheel

Explanation:

Balancing of wheel is done to equalize the weight in every position of the wheel.

92) Taps are re-sharpened by grinding

Answer is:

Flutes

Explanation:

93) The tapping hole should be

Answer is:

Equal to the core (minor) diameter of the tap

Explanation:

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The symbol conventionally used for resinoid bond is

'B'

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Related Cutting Tools MCQ - Machinist(Set-1) with Answers

90) A grinding wheel is marked : 51 A 46 L 5 V -23. Here what does 5 denote ?

Structure

91) Balancing of wheel is done to

Equalize the weight in every position of the wheel

92) Taps are re-sharpened by grinding

Flutes

93) The tapping hole should be

Equal to the core (minor) diameter of the tap

For More Cutting Tools MCQ - Machinist(Set-1) with Answers