Consider the following statements regarding speed control of induction motors by means of external rotor resisters: 1. Reduction in speed is accompanied by reduced efficiency 2. With a large resistance in the rotor circuit, the speed would vary considerably with variation in torque. 3. The method is very complicated. The disadvantage of such a method of speed control would include:

Consider the following statements regarding speed control of induction

1.	Consider the following statements regarding speed control of induction motors by means of external rotor resisters: 1. Reduction in speed is accompanied by reduced efficiency 2. With a large resistance in the rotor circuit, the speed would vary considerably with variation in torque. 3. The method is very complicated. The disadvantage of such a method of speed control would include:
A.	1 and 3
B.	2 and 3
C.	1 and 2
D.	1, 2 and 3
Answer» B. 2 and 3

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