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Machine Design

Machine Design
The static tooth load should be __________ the dynamic load.

Less than
Equal to
None of these
Greater than

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

15
25
21
17

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Machine Design
The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).

10 m/s
20 m/s
15 m/s
12.5 m/s

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Machine Design
Wahl's stress factor __________ very rapidly as the spring index decreases.

None of these
Remain same
Decreases
Increases

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Machine Design
The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.042361111111111
0.085416666666667
0.084027777777778
0.12638888888889

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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
Yield strength
None of these
Elastic strength

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