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1 Ward-Leonard method is suitable for constant torque drives.
2 Ward-Leonard method is suitable for constant power drives.
3 Field-control niethod 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, Options are ⇒ (A) 1,2,6, (B) 1,2,4, (C) 1,6, (D) 1,3,4, (E) , Leave your comments or Download question paper.
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 niethod 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 [Correct Answer] |
B. | 1,2,4 [Wrong Answer] |
C. | 1,6 [Wrong Answer] |
D. | 1,3,4 [Wrong Answer] |