Consider the following statements for a.c. series motors:
1. The rotor is designed so that its R/X ratio is small.
2. dT/dω < 0 where T and ω are torque and speed respectively.
3. The reference and control voltages should be in phase quadrature, but their magnitudes need not be equal.
Which of the statement given above are correct?
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 and 3
Answer: Option B
This Question Belongs to Electronics And Communications Engineering >> Control Systems
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