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Machine Design

Machine Design
Taper usually provided on cotter is

1 in 24
1 in 10
1 in 5
1 in 40

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Machine Design
A rivet is specified by

Type of head
Shank diameter
Length of tail
Length of rivet

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Machine Design
A screw is said to be over hauling screw, if its efficiency is

More than 50%
None of these
Equal to 50%
Less than 50%

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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
0.25
0.5
0.2

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Machine Design
The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to

3/(3 + v)
0.75/(0.75 + √v)
4.5/(4.5 + v)
6/(6 + v)

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Machine Design
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

10 times
5 times
20 times
15 times

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