Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is leading. lagging. zero. unity. leading. lagging. zero. unity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos (α/2) sin (α/2) Cos α² Cos α Cos (α/2) sin (α/2) Cos α² Cos α ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt. 800 Amp. 320 Amp. 0.5 Amp. 400 Amp. 800 Amp. 320 Amp. 0.5 Amp. 400 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is rectangular. triangular. pulsating. sinusoidal. rectangular. triangular. pulsating. sinusoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test on induction motor is conducted to find which of the following losses? Rotational loss Stator copper loss All of these Stator core loss Rotational loss Stator copper loss All of these Stator core loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop induction generator torque. induction motor torque. synchronous motor torque. DC motor torque. induction generator torque. induction motor torque. synchronous motor torque. DC motor torque. ANSWER DOWNLOAD EXAMIANS APP
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