Electrical Machines If the excitation is increased, the power factor is leading power factor unity power factor None of these lagging power factor leading power factor unity power factor None of these lagging power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. The frequency of rotor current is 5 Hz 1 Hz 0 Hz 50 Hz 5 Hz 1 Hz 0 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer oil is used as an insulator. a coolant. inert medium. both A and B. an insulator. a coolant. inert medium. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the armature windings are placed on the rotor because of the necessity for electromechanical energy conversion generation of voltage commutation development of torque electromechanical energy conversion generation of voltage commutation development of torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1, 2 and 3 1 and 2 1 and 3 2 alone 1, 2 and 3 1 and 2 1 and 3 2 alone ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 2 and 2 4 ang 1 2 and 1 4 and 2 2 and 2 4 ang 1 2 and 1 4 and 2 ANSWER DOWNLOAD EXAMIANS APP
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