Machine Design
The bending stress in a curved beam is

Zero at the centroidal axis
None of these
Zero at the point other than centroidal axis
Maximum at the neutral axis

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Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

The new belt will carry more than its share and result in short life
Belts are available in sets
New and old belts will cause vibrations
Only one belt cannot be fitted with other used belts

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Machine Design
The creep in the belt is due to

Stresses beyond elastic limit of belt material
Unequal extensions in the belt due to tight and slack side tensions
Effect of temperature on belt
Material of belt

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