Induction generator is self excited machine.

Voltage build up in an isolated induction generator depends on
A. Capacitor bank value
B. Residual magnetism of the rotor iron
C. Residual magnetism of the stator iron

A self excited induction generator

Two three phase squirrel-cage induction generator are identical in all respects except the fact that the slot depths in machine B is more than that of A.
Machine B as compared to machine A, will have

A 3-phase induction motor can also be run as

Induction generator

For an induction motor to work in isolation, it should have

A 3-phase induction motor has full load efficiency of 0.7 and a maximum efficiency of 0.85. It is operated at a slip of 0.6 by reduced voltage method. The efficiency of the motor at this operating point is

I. Voltage of an externally excited induction generator can not be controlled.
II. Frequency of an externally excited induction generator can be controlled.

If the residual flux is absent in the rotor iron of the isolated induction generator,

Choose the correct match for the corresponding characteristics of a 3-phase induction motor.
x-axis y-axis
A. stator current power output (P) Curve I
B. torque slip (Q) Curve II
C. speed power output (R) Curve III

Induction generator can only work at leading reactive power.

The most acceptable application field where an induction generator cana be used is

The magnetization curve in the induction generator working in isolation has similar characteristic as

What is/are the shortcomings of an induction generator in real time system?