Machine Design
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to

Reduce vibration
Ensure proper alignment
Ensure uniform loading
Reduce slip

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Machine Design
When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

Have contact at the bottom most of the bearing
Move towards left of the bearing making metal to metal contact
Move towards right of the bearing making the metal to metal contact
Move towards right of the bearing making no metal to metal contact

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Machine Design
Which is correct statement?

A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
Which one is rigid will depend on several other factors
Both will be equally rigid
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel

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