For very sensitive and wide speed control, which of the following method is preferred?(a) Armature control(b) Ward-Leonard control(c) Multiple voltage control(d) Field controlThis question was addressed to me at a job interview.The question is from DC Motor Basics -2 topic in chapter DC Motors of DC Machines

For very sensitive and wide speed control, which of the following meth

1.	For very sensitive and wide speed control, which of the following method is preferred?(a) Armature control(b) Ward-Leonard control(c) Multiple voltage control(d) Field controlThis question was addressed to me at a job interview.The question is from DC Motor Basics -2 topic in chapter DC Motors of DC Machines
Answer» The correct answer is (B) Ward-Leonard control For EXPLANATION I would say: In ward-Leonard method, by using big CIRCUITRY, very fine speed control over the whole range from zero to NORMAL speed and that too in both directions can be obtained. The motor-generator set can PROVIDE speed both below and above the rated speed and in both direction, by this method.

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