Consider the following statements regarding the speed control of dc motors:
1 Ward-Leonard method is suitable for constant torque drives.
2 Ward-Leonard method is suitable for constant power drives.
3 Field-control method facilitates speed control below base speed.
4 Armature resistance control method is more efficient than Ward-Leonard method.
5 Field control method is suitable for constant torque drives.
6 Armature resistance control method is suitable for constant torque drives.
From these the correct answer is
A. 1,2,6
B. 1,2,4
C. 1,6
D. 1,3,4
Show Answer
Answer: A
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