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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

Least of Pt, Ps and Pc/P
Ps /P
Pt /P
Pc /P

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Rectangular
None of these
Parallel
Square

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Machine Design
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)

d/6
d/4
d/2
d/8

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

2 kN-m
3 kN-m
1 kN-m
4 kN-m

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Machine Design
In leaf springs, the longest leaf is known as

Upper leaf
Lower leaf
None of these
Master leaf

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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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