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Machine Design

Machine Design
The following type of nut is used with alien bolt

Any one of the above
Castle nut
Slotted nut
Hexagonal nut

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Machine Design
Belt slip may occur due to

Loose belt
All of these
Heavy load
Driving pulley too small

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Machine Design
Euler’s formula for a mild steel column is not valid if the slenderness ratio is

120
60
100
90

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Machine Design
Crushing resistance required to crush the rivet per pitch length is

p.t.σc
p.d.σc
(p - d) t.σc
n.d.t.σc

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

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

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

Both the ends fixed
One end fixed and the other end hinged
One end fixed and the other end free
Both the ends hinged

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