Electrical Machines For P pole machine relation between electrical degrees and mechanical degrees is θelec = θmech θelec = 2/P*θmech θelec = P/2*θmech θelec = 4/P*θmech θelec = θmech θelec = 2/P*θmech θelec = P/2*θmech θelec = 4/P*θmech ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? magnetization cross magnetization All of these demagnetization magnetization cross magnetization All of these demagnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to provide return path for the flux. ventilate the armature. protect the whole machine. hold armature stamping in position. provide return path for the flux. ventilate the armature. protect the whole machine. hold armature stamping in position. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm 0.25Ω. 0.5Ω. 1Ω. 0.23Ω. 0.25Ω. 0.5Ω. 1Ω. 0.23Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC Series motor, speed lower than the rated speed can be obtained by Connecting an additional resistance in the armature circuit. Connecting an additional resistance in stator circuit. Connecting an additional resistance in the field circuit. Any of the above. Connecting an additional resistance in the armature circuit. Connecting an additional resistance in stator circuit. Connecting an additional resistance in the field circuit. Any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotives which of the following motor are used ? DC Shunt motor. Synchronous motor. DC compound motor. DC series motor. DC Shunt motor. Synchronous motor. DC compound motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
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