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Machine Design

Machine Design
A locking device extensively used in automobile industry is a

Ring nut
Jam nut
Sawn nut
Castle nut

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Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
2
43832
1

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Machine Design
Auto frettage is the method of

Increasing the life of thick cylinders
Joining thick cylinders
Calculating stresses in thick cylinders
Pre-stressing thick cylinders

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Machine Design
The shock resistance of steel is increased by adding

Chromium
Nickel
Nickel and chromium
Cobalt and molybdenum

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Machine Design
The function of cutting oil when threading a pipe is to

All of these
Help removes chips
Lubricate the dies
Provide cooling action

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Machine Design
The groove angle of the pulley for rope drive is usually

35°
20°
45°
60°

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