Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is best suited for capacitor bank switching? Oil CB. Vacuum CB. Air blast CB. SF6 CB. Oil CB. Vacuum CB. Air blast CB. SF6 CB. 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 = 80 MW, P2 = 120 MW P1 = 100 MW, P2 = 100 MW P1 = 60 MW, P2 = 140 MW P1 = 120 MW, P2 = 80 MW P1 = 80 MW, P2 = 120 MW P1 = 100 MW, P2 = 100 MW P1 = 60 MW, P2 = 140 MW P1 = 120 MW, P2 = 80 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems A lossless power system has to serve a load of 250 MW. There are two generators(G1 and G2) in the system with cost curves C1 and C2 respectively defined as follows: C1 = PG1+0.055P²G1 C2 = 3 PG2 + 0.03 P²G2 Where PG1 and PG2 are the MW injections from generators G1 and G2 respectively. Thus, the minimum cost dispatch will be PG1 = 150 MW and PG2 = 100 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 250 MW and PG2 = 0 MW PG1 = 0 MW and PG2 = 250 MW PG1 = 150 MW and PG2 = 100 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 250 MW and PG2 = 0 MW PG1 = 0 MW and PG2 = 250 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The internal flux linkage due to internal flux of a conductor is I/6*10-7 wb-T/m I/4*10-7 wb-T/m I/2*10-7 wb-T/m All of these I/6*10-7 wb-T/m I/4*10-7 wb-T/m I/2*10-7 wb-T/m All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earth fault relay uses the which of the following sequence currents? positive sequence any of the above negative sequence zero sequence positive sequence any of the above negative sequence zero sequence ANSWER DOWNLOAD EXAMIANS APP
Power Systems The use of high speed circuit breakers improves system stability. decrease system stability. increased the short circuit current. reduces the short circuit current. improves system stability. decrease system stability. increased the short circuit current. reduces the short circuit current. ANSWER DOWNLOAD EXAMIANS APP
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