Which of the following methods are suitable for the speed control of squirrel cage induction motors?
- Voltage control.
- Rotor resistance control.
- Frequency control.
- Pole changing method.
Select the correct answer using the codes given below:
A. 2, 3 and 4.
B. 1, 3 and 4.
C. 1, 2 and 3.
D. 2 and 4.
Show Answer
Answer: B
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