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Machine Design

Machine Design
The spring mostly used in gramophones is

Conical spring
Flat spiral spring
Volute spring
Helical spring

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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
Equal to
Twice
Four times

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Machine Design
In a multiple V-belt drive, if one of the belts break, then

The broken belt need not to be replaced
The broken belt and the belt on either side of it, is replaced
Only the broken belt is replaced
The entire set of belts is replaced

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Machine Design
The product of the diametral pitch and circular pitch is equal to

1
1/π
π × number of teeth
π

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Machine Design
The centrifugal tension in belts

Decreases the power transmitted
Increase the wrap angle
Increases the belt tension without increasing power transmission
Increases the power transmitted

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Machine Design
Stress concentration in static loading is more serious in

Equally serious in both cases
Brittle materials
Ductile materials
Depends on other factors

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