9) Which one of the following indicates the Ra value ?

Answer is:

0.000001 mm

Surface Finish MCQ - Machinist(Set-1) with Answers

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10) The irregularities in the surface texture due to the inherent action of the production process is known as

Answer is:

Roughness

Explanation:

The irregularities in the surface texture result from the inherent action of the production process. These will include traverse feed marks and irregularities within them.

The irregularities in the surface texture due to the inherent action of the production process is known as

11) The stylus of the surface indicator is made of

Answer is:

Diamond

12) One micro-inch is equal to

Answer is:

One millionth of an inch

13) Which one of the following statements is NOT correct ?

Lay is the direction of the predominant surface pattern, ordinarily determined by the production method used.

Normal profile is the contour of a surface in a plane perpendicular to the surface, unless some other angle is specified

One micrometer is equal to one thousandth of a millimeter.

Flaws are irregularities, which occur at one place or at relatively frequent or widely varying intervals in a surface

Answer is:

Normal profile is the contour of a surface in a plane perpendicular to the surface, unless some other angle is specified

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