Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 20-25% 45-55% 30-40% 60-70% 20-25% 45-55% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A buchholz relay is used for both 1 and 2 nether 1 nor 2 protection of a transformer against all external faults protection of a transformer against all internal faults both 1 and 2 nether 1 nor 2 protection of a transformer against all external faults protection of a transformer against all internal faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no shunt admittance None of these both 1 and 2 mutual coupling shunt admittance None of these both 1 and 2 mutual coupling ANSWER DOWNLOAD EXAMIANS APP
Power Systems The total number of strands(N) is concentrically stranded cable with total annular space filled with strands of uniform diameter is given by (if x is number of layers) N = 3x²-2x+1 N = 3x²-6x+1 N = 3x²-3x+1 N = 3x²+3x+1 N = 3x²-2x+1 N = 3x²-6x+1 N = 3x²-3x+1 N = 3x²+3x+1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A load centre is at an equidistant from the two thermal generating stations G1 and G2. The fuel cost characteristics of the generating stations are given by F1 = a + bP1 + cP²1 F2 = a + b P2 + 2cP²2 Where P1 and P2 are the generation in MW of G1 and G2, respectively. For most economic generation to meet 300 MW of load, P1 and P2 respectively, are 100, 200 175, 125 150, 150 200, 100 100, 200 175, 125 150, 150 200, 100 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading (SIL) is represented by both 1 and 2 Vph²/Zs Vl²/Zs Vl²*√(C/L) both 1 and 2 Vph²/Zs Vl²/Zs Vl²*√(C/L) ANSWER DOWNLOAD EXAMIANS APP
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