In Ward-Leonard control the lower limit of speed is imposed by
A) residual magnetism of the generator
B) core losses of motor
C) mechanical losses of motor and gen¬erator together
D) all of the above
Correct Answer:
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Q15: Which of the following motors is usually
Q16: Which of the following motors is most
Q17: Which motor should not be started on
Q18: Ward-Leonard control is basically a
A)voltage control method
B)field
Q19: For constant torque drive which speed control
Q21: The main disadvantage of the Ward-Leonard control
Q22: Regenerative method of braking is based on
Q23: The hysteresis loss in a D.C. machine
Q24: In a D.C. generator all of the
Q25: The losses occurring in a D.C. generator
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