A dc shunt motor runs at rated speed. If its field circuit gets open-circuited, then soon after this the motor speed would tend to
A. decrease.
B. remain unchanged.
C. increase.
D. fluctuate around its previous speed.
Answer:C
A dc shunt motor runs at rated speed. If its field circuit gets open-circuited, then soon after this the motor speed would tend to
A. decrease. B. remain unchanged. C. increase. D. fluctuate around its previous speed.