Power Systems Oxide film arrestor has which of the following properties? Both A and B. Does not require daily charging. Installed at points of transmission line where daily visit is difficult. It is expensive. Both A and B. Does not require daily charging. Installed at points of transmission line where daily visit is difficult. It is expensive. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A sodium graphite reactors use sodium as moderator and graphite as coolant. a mixture of sodium and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as coolant and graphite as moderator. sodium as moderator and graphite as coolant. a mixture of sodium and graphite as moderator. a mixture of sodium and graphite as coolant. sodium as coolant and graphite as moderator. 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 For complete protection of 3-phase system from the short circuit faults minimum number of relays required are one three six two one three six two ANSWER DOWNLOAD EXAMIANS APP
Power Systems The use of high speed circuit breakers reduces the short circuit current. increased the short circuit current. decrease system stability. improves system stability. reduces the short circuit current. increased the short circuit current. decrease system stability. improves system stability. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If all the sequence voltages at the fault point in a power system are equal, then the fault point is a LLG LL LG LLL LLG LL LG LLL ANSWER DOWNLOAD EXAMIANS APP
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