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Machine Design

Machine Design
Shear stress theory is applicable for

Ductile materials
All of these
Brittle materials
Elastic materials

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Machine Design
The standard length of the shaft is

7 m
6 m
5 m
All of these

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-fourth
One-third
Double
One-half

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Machine Design
For high speed engines, the cam follower should move with

Simple harmonic motion
Uniform velocity
Uniform acceleration and retardation
Cycloidal motion

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Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.6
0.2
0.5
0.25

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Machine Design
Buttress threads are usually found on

Spindles of bench vices
Screw cutting lathes
Railway carriage couplings
Feed mechanisms

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