Power Systems What type of back up protection is used for alternators? Mho relay. Buchholz relay. Impedance relay. IDMT relay. Mho relay. Buchholz relay. Impedance relay. IDMT relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If skin depth is more, then skin effect is less either 1 or 2 more None of these less either 1 or 2 more None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Incremental cost of two generators Ic1 = 0.2 P1+60, Ic2 = 0.3 P2+40 and the ratings of the generator are 150 and 250 MW. Find the load sharing of each generator for a load of 200 MW? P1 = 120 MW, P2 = 80 MW P1 = 60 MW, P2 = 140 MW P1 = 100 MW, P2 = 100 MW P1 = 80 MW, P2 = 120 MW P1 = 120 MW, P2 = 80 MW P1 = 60 MW, P2 = 140 MW P1 = 100 MW, P2 = 100 MW P1 = 80 MW, P2 = 120 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong? Slow convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence Unreliable convergence Slow convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence Unreliable convergence ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 50% 75% 90% 86%% 50% 75% 90% 86%% 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 = 3x²-6x+1 N = 3x²+3x+1 N = 3x²-2x+1 N = 3x²-3x+1 N = 3x²-6x+1 N = 3x²+3x+1 N = 3x²-2x+1 N = 3x²-3x+1 ANSWER DOWNLOAD EXAMIANS APP