Power Systems The skin effect shows that current density is more at the surface of the condutor the distribution of AC current is uniform through the cross section of the conductor current density is lower at the surface of the condutor current density is more at the centre of the condutor current density is more at the surface of the condutor the distribution of AC current is uniform through the cross section of the conductor current density is lower at the surface of the condutor current density is more at the centre of the condutor ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base? 0.1 pu 0.2 pu 0.5 pu 0.4 pu 0.1 pu 0.2 pu 0.5 pu 0.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following is a medium and low head turbines Kaplan and Francis turbines. Francis and Kaplan turbines. Pelton and Kaplan turbines. None of above. Kaplan and Francis turbines. Francis and Kaplan turbines. Pelton and Kaplan turbines. None of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will both 2 and 3 increase the thermal efficiency reduce the thermal efficiency reduce the heat both 2 and 3 increase the thermal efficiency reduce the thermal efficiency reduce the heat ANSWER DOWNLOAD EXAMIANS APP
Power Systems Direct conversion of heat energy into electrical energy is possible through Both A and C. MHD generator. Fuel or solar cell. Thermal converters. Both A and C. MHD generator. Fuel or solar cell. Thermal converters. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 2.5 pu 4.28 pu 3.75 pu 7.25 pu 2.5 pu 4.28 pu 3.75 pu 7.25 pu ANSWER DOWNLOAD EXAMIANS APP
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