Synopsis of Electrical Engineering

Important multiple choice questions on Electrical Machines 1.        To eliminate the single phasing torque in an ac servomotor, the rotor must have a)       Both high resistance and reactance. b)        High resistance. c)        High reactance. d)       Large air-gap 2.        If a single-winding single-phase motor is running in a particular direction a)       Both the rotating fields (rotating in opposite directions) have the same strength. b)       Forward rotating field is slightly stronger than the backward field. c)        Forward rotating field is much stronger than the backward field. d)       Backward field is stronger than the forward field. 3.        A...

Important Multiple Choice Questions in Electrical Machines 1.        In an electromechanical energy conversion device, the developed torque depends upon A)      Stator field strength and torque angle B)       Stator field and rotor field strengths C)       Stator field and rotor field strengths and the torque angle D)      Stator field strength only 2.        Consider the following statements: The use of interpoles in dc machines is to counteract the                                 I.             Reactance voltage                 ...