# Mechanical Engineering - Machine Design

### Exercise :: Machine Design - Section 1

16.

A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

 A. castle nut B. jam nut C. ring nut D. sawn nut

Explanation:

No answer description available for this question. Let us discuss.

17.

Slenderness ratio is the ratio of

 A. maximum size of column to minimum size of column B. width of column to depth of column C. effective length of column to least radius of gyration of the column D. effective length of column to width of column

Explanation:

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18.

A crankshaft is a __________ shaft.

 A. transmission B. machine

Explanation:

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19.

According to Indian standard specifications, 100 H6/g5 means that the

 A. actual size is 100 mm B. basic size is 100 mm C. difference between the actual size and basic size is 100 mm D. none of the above

Explanation:

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20.

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

 A. B. C. D.