Explanation: The speed at which rotating magnetic field revolves is called the synchronous speed and this effect is equivalent to mechanical rotation of permanent magnets or DC excited field poles. 8. The magnitude of rotating flux _____________ at all instants of time.
A. Changes
B. Remains constant
C. Pulsates
D. Any of the mentioned
Answer:A
Explanation: The speed at which rotating magnetic field revolves is called the synchronous speed and this effect is equivalent to mechanical rotation of permanent magnets or DC excited field poles. 8. The magnitude of rotating flux _____________ at all instants of time.
A. Changes B. Remains constant C. Pulsates D. Any of the mentioned