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Machine Design

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

None of these
Both A and B
Perpendicular
Parallel

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

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Machine Design
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

Either A or B
Partially
None of these
Fully

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Machine Design
The power transmitted by the belt drive can be increased by

Dressing the belt to increase the coefficient of friction
Increasing wrap angle by using idler pulley
Increasing the initial tension in the belt
All of these

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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.

Equal to
Four times
Three times
Twice

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Machine Design
The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.084027777777778
0.12638888888889
0.085416666666667
0.042361111111111

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