Which of the following methods is easily applicable to control the spe – McqOptions

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1.	Which of the following methods is easily applicable to control the speed of thesquirrel-cage induction motor ?
A.	By changing the number of stator poles
B.	Rotor rheostat control
C.	By operating two motors in cascade
D.	By injecting e.m.f. in the rotor circuit
Answer» B. Rotor rheostat control

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