The speed control of universal motor used for sewing machines is by
A) friction
B) varying the resistance
C) tapping the field
D) centrifugal mechanism
Correct Answer:
Verified
Q10: A reluctance motor
A)is self-starting
B)is constant speed motor
C)needs
Q11: In a hysteresis motor, the rotor must
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Q14: Which of the following applications always have
Q16: Torque developed by a single phase induction
Q17: In split phase motor main winding is
Q18: In repulsion motor, maximum torque is developed
Q19: If the centrifugal switch does not open
Q20: Speed torque characteristic of a repulsion induction
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