Electrical Machines Transformer cooling and insulating oil must be of low BDV. low viscosity. high viscosity. low resistivity. low BDV. low viscosity. high viscosity. low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 4. 6. 8. 2. 4. 6. 8. 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is 1, 4 2,3 2, 3, 5 1, 4, 5 1, 4 2,3 2, 3, 5 1, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature MMF waveform of a DC machine is sinusoidal. triangular. rectangular. pulsating. sinusoidal. triangular. rectangular. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power developed by salient pole synchronous machine is/are both 1 and 2 power due to saliency or reluctance only None of these excitation power only both 1 and 2 power due to saliency or reluctance only None of these excitation power only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking can be used for series motors. shunt motors. All of these compound motors. series motors. shunt motors. All of these compound motors. ANSWER DOWNLOAD EXAMIANS APP
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