Zero error in micrometer means

20) Lock nut in the micrometer is provided to

Control the movement of the spindle

Lock the reading after setting it over the workpiece

Measure the workpiece accurately

Lock the micrometer when it is not in use

Answer is:

Lock the reading after setting it over the workpiece

Explanation:

The lock nut is simply a quarter turn nut that locks the spindle from turning. The sleeve contains the scale which is used to determine the measurement and the internal threads which allow the spindle to move.

21) Micrometer works on the principle of

Answer is:

Nut & bolt

Explanation:

The working principle of the Micrometer is based on screw and nut. (Rotational moment to linear moment) As we know as the screw rotates one revolution on the screw, then the screw moves linearly by one pitch distance

22) Which one of the following instrument is used to measure accurately the angle of taper ?

Answer is:

Vernier bevel protractor

Explanation:

Vernier bevel protractor is used to accurately measure the angle of taper

23) The least count of a vernier caliper is

Answer is:

0.02 mm

Explanation:

Least count of Vernier Caliper is 0.02 mm

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Zero error in micrometer means

Zero on thimble and datum line on sleeve do not coincide when measuring faces are in contact

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Related Measuring MCQ - Machinist(Set-1) with Answers

20) Lock nut in the micrometer is provided to

Lock the reading after setting it over the workpiece

21) Micrometer works on the principle of

Nut & bolt

22) Which one of the following instrument is used to measure accurately the angle of taper ?

Vernier bevel protractor

23) The least count of a vernier caliper is

0.02 mm

For More Measuring MCQ - Machinist(Set-1) with Answers