Machine Design
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called

Boundary lubricated bearing
Hydrostatic lubricated bearing
Hydrodynamic lubricated bearing
Zero film bearing

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Machine Design
For same pulley diameters, center distance, belt speed and belt and pulley materials,

Open and crossed belt drives transmit same power
Open belt drive transmits more power than crossed belt drive
Crossed belt drive transmits more power than open belt drive
Power transmission does not depend upon open and crossed types of constructions

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Machine Design
Crowning on pulley helps

In increasing the slip of the belt
To keep the belt in centre on a pulley while it is in motion
To increase pulley life
In decreasing the slip of the belt

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