In a three-phase induction motor, the air-gap power is equal to:

Option 1: Stator input power

Option 2: Rotor copper loss

Option 3: Rotor input power

Option 4: Mechanical output power

Correct Option: 3

Explanation

Air-gap power is the power transferred magnetically from stator to rotor. This power directly becomes rotor input power before splitting into rotor copper loss and mechanical power. Hence, air-gap power equals rotor input power.

In a three-phase induction motor, the air-gap power is equal to:

Explanation

In 1-ϕ IM if the slip of motor is S with regard to the forward rotating flux, then its slip with regard to the backward rotating flux will be:

Contact Form