Power Systems Lightning arresters are used to protect electrical equipment against over voltages due to indirect lightning stroke. direct strokes of lightning. over currents due to lightning stroke. power frequency of over voltages. over voltages due to indirect lightning stroke. direct strokes of lightning. over currents due to lightning stroke. power frequency of over voltages. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For transmission line which one of the following relation is true? AD - BC = 1 AD - BC = 0 AD + BC = 0 AD - BC = -1 AD - BC = 1 AD - BC = 0 AD + BC = 0 AD - BC = -1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 125 MVA 100 MVA 400 MVA 500 MVA 125 MVA 100 MVA 400 MVA 500 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a line is increased by which of the following compensation methods? shunt reactor both 1 and 2 series capacitor shunt capacitor shunt reactor both 1 and 2 series capacitor shunt capacitor ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is 0.5 pu 4 pu 0.2 pu 2 pu 0.5 pu 4 pu 0.2 pu 2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of the cable is doubled, its capacitance C will be doubled. unchanged. one-fourth. one-half. doubled. unchanged. one-fourth. one-half. ANSWER DOWNLOAD EXAMIANS APP
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