Machine Design
For longitudinal joint in boilers, the type of joint used is

Lap joint with one ring overlapping the other
Butt joint with single cover plate
Butt joint with double cover plate
Any one of the above

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Machine Design
When the belt speed increases

Power transmitted increases
Power transmitted remains the same
Power transmitted increases to a maximum value and then decreases
Power transmitted decreases

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Machine Design
When the shaft rotates in anticlockwise direction at high 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 no metal to metal contact
Move towards right of the bearing making metal to metal contact

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