Power Systems A thermal protection switch is used to provide protection against over voltage. short circuit. temperature. overload. over voltage. short circuit. temperature. overload. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.52 Hz 50 Hz -0.52 Hz 0.48 Hz 0.52 Hz 50 Hz -0.52 Hz 0.48 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are base load plants? All of these hydro plants thermal plants nuclear plants All of these hydro plants thermal plants nuclear plants ANSWER DOWNLOAD EXAMIANS APP
Power Systems Critical mass is a mass of fissionable material required to stop a chain reaction. minimum mass of fissionable material required to sustain chain reaction. maximum mass of fissionable material required to sustain a chain reaction. none of these. a mass of fissionable material required to stop a chain reaction. minimum mass of fissionable material required to sustain chain reaction. maximum mass of fissionable material required to sustain a chain reaction. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The factor affecting run off are the topography and nature of soil in the catchment area. amount of vegetation and weather condition in the catchment area. all of above. rain fall pattern, shape and size of catchment area. the topography and nature of soil in the catchment area. amount of vegetation and weather condition in the catchment area. all of above. rain fall pattern, shape and size of catchment area. 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 LL LLG LG LLL LL LLG ANSWER DOWNLOAD EXAMIANS APP
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