Power Systems Lightning arresters are used to protect electrical equipment against direct strokes of lightning. over voltages due to indirect lightning stroke. power frequency of over voltages. over currents due to lightning stroke. direct strokes of lightning. over voltages due to indirect lightning stroke. power frequency of over voltages. over currents due to lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum power transfer capability of transmission line can be increased by Using series capacitance Parallel transmission lines Using bundled conductors All of these Using series capacitance Parallel transmission lines Using bundled conductors All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The draw back of NR method as compare to Gauss-Seidel method is/are? large number of iterations None of these both 1 and 2 large requirement of computer memory large number of iterations None of these both 1 and 2 large requirement of computer memory ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors are used for EHV transmission lines primarily for reducing the surge impedance of the line corona loss copper loss voltage drop across the line surge impedance of the line corona loss copper loss voltage drop across the line ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses? 85.5 102.5 105.2 95.5 85.5 102.5 105.2 95.5 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? 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 High ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
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