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Machine Design

Machine Design
In a flange coupling, the flanges are coupled together by means of

Headless taper bolts
Studs
None of these
Bolts and nuts

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Machine Design
A chain drive transmits __________ power as compared to belt drive.

More
None of these
Same
Less

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

One-fourth
Double
One-half
One-third

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Machine Design
Resistance to fatigue of a material is measured by

Young's modulus
Elastic limit
Coefficient of elasticity
Endurance limit

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Machine Design
The objective of idler pulley in belt drive is to

Increase the power transmission capacity
Decrease the tendency of belt to slip
All the above objectives
Increase the wrap angle and belt tension

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

Remains unchanged
Increases
None of these
Decreases

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