Power Systems The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by Zs = 0.2 pu, Zm =0.7 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.2 pu, Zm =0.7 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.6 pu, Zm =0.5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? no load short circuit full load any of the above no load short circuit full load any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relationships are not valid for short transmission lines All of these Is = Ir A = D = 1 B = C = Z All of these Is = Ir A = D = 1 B = C = Z ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a fault occurs on any feeder, the fault current is much lower than with unsectional bus bar. equal to unsectional bus bar. much higher than with unsectional bus bar. none of these. much lower than with unsectional bus bar. equal to unsectional bus bar. much higher than with unsectional bus bar. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A network containing 100 buses in which 10 are the voltage control buses, 5 are fixed shunt capacitor buses, 20 are the reactive power support buses, 6 are the generator buses. Find the size of the Jacobian matrix? 165 × 165 164 × 164 162 × 162 163 × 163 165 × 165 164 × 164 162 × 162 163 × 163 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speeds of Kaplan, Francis and Pelton turbines are in the decreasing order. neither increasing nor decreasing order. the increasing order. None of these the decreasing order. neither increasing nor decreasing order. the increasing order. None of these ANSWER DOWNLOAD EXAMIANS APP
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