The good power factor of an induction motor can be achieved if the average flux density in the air gap is
A. Absent
B. Small
C. Large
D. Infinity
Answer: Option C
Solution (By Examveda Team)
Power factor in an induction motor is influenced by the flux density in the air gap.A good power factor can be achieved when the average flux density in the air gap is large.
This is because a larger flux density reduces the magnetizing current required, leading to a higher power factor.
If the flux density is too small, more magnetizing current is needed, which lowers the power factor.
Related Questions on Polyphase Induction Motors
Which is of the following data is required to draw the circle diagram for an induction motor?
A. Block rotor test only
B. No load test only
C. Block rotor test and no-load test
D. Block rotor test, no-load test and stator resistance test
The starting torque of a three phase induction motor can be increased by
A. Increasing slip
B. Increasing current
C. Both (A) and (B)
D. None of the above
Rotor rheostat control method of speed control is used for
A. Squirrel-cage induction motors only
B. Slip ring induction motors only
C. Both (A) and (B)
D. None of the above

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