Machine Design
Antifriction bearings are

Sleeve bearings
Thin lubricated bearings
Hydrodynamic bearings
None of these

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

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Machine Design
Form coefficient of spring is

Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Concerned with strength of wire of spring
Its capability of storing energy

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