Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Tangent key
Woodruff key
Gib-head key
Feather key

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Machine Design
When the belt is transmitting maximum power,

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

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Machine Design
Which is correct statement? Stress concentration in cyclic loading is

Equally serious in both types of materials
Seriousness would depend on other factors
Very serious in brittle materials and less serious in ductile materials
Very serious in ductile materials and less serious in brittle materials

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