Machine Design
Which of the following is not correct procedure to increase the fatigue limit?

Cold working
Surface decarburisation
Under stressing
Shot peening

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Machine Design
When the belt is transmitting maximum power,

The tension in tight side is twice the centrifugal tension
None of these
The tension in tight side is thrice the centrifugal tension
The tension in slack side is equal to the centrifugal tension

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Machine Design
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that

The effect of the restraining action of the heads at the end of the pressure vessel is neglected
The effect of curvature of the cylinder wall is neglected
All of these
The tensile stresses are uniformly distributed over the section of the walls

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Machine Design
Form coefficient of spring is

Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Its capability of storing energy
Concerned with strength of wire of spring

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