BASIC FITTING 3 FITTINGS - Practice Mode

1) What is the bevelling angle for holes to be threaded?

75 Degree 120 Degree 90 Degree 80 Degree

Correct Answer: 120 Degree

2) What is the effect while measuring if ratchet stop is not provided on micrometer?

Incorrect read Least count increases Least count decreases Increases the life of micro meter

Correct Answer: Incorrect read

Explanation:

Ball centre is sometimes used for tapering by the "set-over tail stock" method. The standard centres cannot sit squarely in the center hole when the tail stock is set over.

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