Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 18° 72° 36° 30° 18° 72° 36° 30° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2HZ 50Hz 2.5Hz 1 Hz 2HZ 50Hz 2.5Hz 1 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be 3.2% and -1.6% 6% and -4% None of these 4.8% and -3.2% 3.2% and -1.6% 6% and -4% None of these 4.8% and -3.2% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ? ωe = ωm ωe = 1/2*ωm ωe = 4*ωm ωe = 2*ωm ωe = ωm ωe = 1/2*ωm ωe = 4*ωm ωe = 2*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3.33% -3.33% -3% +3% +3.33% -3.33% -3% +3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 35 ppm. 45 ppm. 20 ppm. 25 ppm. 35 ppm. 45 ppm. 20 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
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