physique chimie college lycee
MOTOR EFFICIENCY 

 

ELECTRIC MOTOR EFFICIENCY

ACTIVITY

 

 

Description: Define the efficiency of a converter. Evaluate the efficiency of a device.

 

Electric → Mechanical + Heat

 

η = Euseful mechanical energy/Eelectric energy


Definitions
Useful mechanical energy: It is the gravitational work. Em = Wh = mgh
Electric Energy : E = PΔt = VIΔt

 

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