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Machine Design

Machine Design
According to Indian standards, total numbers of fundamental deviations are

20
10
15
25

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Machine Design
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

Three times
Twice
Equal to
Four times

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

124 d
168 d
138 d
151 d

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Machine Design
A coupling used to connect two perfectly aligned shafts, is

Flange coupling
All of these
Muff coupling
Compression coupling

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

63 to 70%
80 to 90%
45 to 60%
70 to 83%

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Machine Design
Creep in belt is due to

Material of the belt
All of these
Uneven extensions and contractions due to varying tension
Material of the pulley

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