Question
Download Solution PDFIn case the air gap in an induction motor is increased,
This question was previously asked in
WBPSC JE Electrical 2018 (Held on 18th Feb 2018) Official Paper
Answer (Detailed Solution Below)
Option 2 : the power factor will decrease.
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Detailed Solution
Download Solution PDFExplanation:
If the air gap of an induction motor is increased,
- The permeability of the magnetic circuit will decrease
- The magnetizing inductance of the motor will decrease
- Leakage reactance will increase
- Leakage flux will increase
- The magnetizing current will increase
- This will cause a poorer power factor at all loads
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