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Machine Design

Machine Design
A column is known as a long column if the slenderness ratio is

100
40
50
70

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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.

Twice
Equal to
Four times
Three times

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Machine Design
The suitable material for belt used in flour mill is

Leather
Rubber
Canvas or cotton duck
Balata gum

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

120
90
60
100

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Machine Design
In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

160°
135°
90°
180°

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Machine Design
A steel containing 0.8% carbon is known as

None of these
Eutectoid steel
Hypo-eutectoid steel
Hypereutectoid steel

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