Electrical Machines What is the phase difference between two windings of A.C servomotor ? 120°. 60°. 90°. 30°. 120°. 60°. 90°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 150 V. 223.V. 200 V. 300 V. 150 V. 223.V. 200 V. 300 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have leading power factor. less breakdown torque. more breakdown torque. higher efficiency. leading power factor. less breakdown torque. more breakdown torque. higher efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? None of these both A and B above rated speed below rated speed None of these both A and B above rated speed below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is N12 : N22. N1 : N2. 1 : 1. none. N12 : N22. N1 : N2. 1 : 1. none. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to limit the armature current. vary the armature resistance. none of above. control field current. limit the armature current. vary the armature resistance. none of above. control field current. ANSWER DOWNLOAD EXAMIANS APP
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