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Machine Design

Machine Design
The material used for brake lining should have __________ coefficient of friction.

None of these
Moderate
High
Low

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Machine Design
A flange coupling is used to connect two shafts

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

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Machine Design
In a horizontal flat belt drive, it is customary to use

Top side of belt as slack side
Idler pulley
Bottom side of belt as slack side
None of these

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Machine Design
Factor of safety for fatigue loading is the ratio of

Endurance limit to the working stress
Elastic limit to the working stress
Young's modulus to the ultimate tensile strength
Elastic limit to the yield point

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Machine Design
A single strap butt joint is always in __________ shear.

None of these
Double
Single
Triple share

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Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.5
2.8
3.5
3.0

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