Power Systems If the frequency is increased, then skin effect will any of the above increases decreases remains unaffected any of the above increases decreases remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Power Systems The fact that current density is higher at the surface when compared to centre is known as All of these skin effect proximity effect carona All of these skin effect proximity effect carona ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power. Find the load angle? 60° 45° 30° 35° 60° 45° 30° 35° ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 15% 88.2% 85% 11.8% 15% 88.2% 85% 11.8% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 60 Hz, 320 Km loss less line has sending end voltage 1.0 pu. The receiving end voltage on no-load is 1.1 pu. none of these. 1.116 pu. 1.088 pu. 1.1 pu. none of these. 1.116 pu. 1.088 pu. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? High ratio of puncture strength to flash over. High relative permittivity Low ratio of puncture strength to flash over. Both 1 and 2 High ratio of puncture strength to flash over. High relative permittivity Low ratio of puncture strength to flash over. Both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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