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Machine Design

Machine Design
In radial bearings, the load acts __________ to the axis of rotation.

Both A and B
Perpendicular
Parallel
None of these

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Machine Design
Rankine's theory of failure is applicable for following type of materials

Ductile
Brittle
Elastic
Plastic

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Machine Design
When two helical springs of equal lengths are arranged to form a cluster spring, then

Both A and B is correct
Shear stress in each spring will be equal
Only A is correct
Load taken by each spring will be half the total load

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Machine Design
A shaft coupling should

All of these
Hold the shafts in perfect alignment
Be easy to connect or disconnect
Transmit full power of the shaft

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Machine Design
The value of stress concentration factor depends upon

Material and geometry of the part
Geometry of the part
None of these
Material of the part

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Machine Design
The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to

3/(3 + v)
4.5/(4.5 + v)
0.75/(0.75 + √v)
6/(6 + v)

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