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Machine Design

Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Both A and B
Reducing
None of these
Increasing

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Machine Design
The helix angle for double helical gears may be made up to

75°
90°
45°
60°

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Machine Design
Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth)

None of these
0.154 - (0.912/T)
0.124 - (0.684/T)
0.175 - (0.841/T)

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Machine Design
Resistance to fatigue of a material is measured by

Elastic limit
Young's modulus
Coefficient of elasticity
Endurance limit

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Machine Design
Oldham coupling is used to connect two shafts

Whose axes intersect at a small angle
Which have lateral misalignment
Which are not in exact alignment
Which are perfectly aligned

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Machine Design
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to

1 d
1.25 d
1.5 d
1.75 d

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