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Machine Design

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

Sawn nut
Castle nut
Jam nut
Ring nut

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Machine Design
Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

Shear strength
None of these
Yield strength
Elastic strength

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Machine Design
For low and moderate speed engines, the cam follower should move with

Uniform acceleration and retardation
Simple harmonic motion
Cycloidal motion
Uniform velocity

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

45 to 60%
70 to 83%
63 to 70%
80 to 90%

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Machine Design
Three different weights fall from a certain height under vacuum. They will take

None of these
Same time to reach earth
Times proportional to weight to reach earth
Times inversely proportional to weight to reach earth

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Machine Design
Aircraft body is usually fabricated by

Welding
Casting
Pre-casting
Riveting

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