Power Systems Lightning arresters are used to protect electrical equipment against direct strokes of lightning. power frequency of over voltages. over currents due to lightning stroke. over voltages due to indirect lightning stroke. direct strokes of lightning. power frequency of over voltages. over currents due to lightning stroke. over voltages due to indirect lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments? 31.35 to 34.65 kV any voltage above 33 kV 25 to 35 kV 33 to 50 kV 31.35 to 34.65 kV any voltage above 33 kV 25 to 35 kV 33 to 50 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Main bus bar protection scheme is /are none of these. differential protection. both fault bus and differential protection. fault bus protection. none of these. differential protection. both fault bus and differential protection. fault bus protection. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LG LLL LLG LL LG LLL LLG LL ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are base load plants? All of these thermal plants nuclear plants hydro plants All of these thermal plants nuclear plants hydro plants ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generating station which has a high investment cost and low operating cost is usually operated as a Peak load station. None of above. Base load station. Minimum load station. Peak load station. None of above. Base load station. Minimum load station. ANSWER DOWNLOAD EXAMIANS APP
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