Machine Design
At low temperatures (say 75°C) the notched bar impact value of steel

Decreases markedly
Increases markedly
Remain same
Depends on heat treatment carried out

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

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

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