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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Least of Pt, Ps and Pc/P
Pc /P
Pt /P

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Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

5°
15°
25°
8°

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Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Decreases
Remains unchanged
Increases
None of these

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Machine Design
A key capable of tilting in a recess milled out in a shaft is known as

Feather key
Flat saddle key
Hollow saddle key
Woodruff key

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Machine Design
Buttress threads are usually found on

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

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Machine Design
In a butt welded joint, the size of weld is __________ the throat of weld.

Double
2 times
0.5 times
Equal to

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