Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be 0.45 pu 0.05 pu 0.25 pu 0.15 pu 0.45 pu 0.05 pu 0.25 pu 0.15 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Thermal shielding is provided to protected the operating personal from exposure to radiations. prevent the reactor wall from getting heated. absorb the fast neutron. All of these protected the operating personal from exposure to radiations. prevent the reactor wall from getting heated. absorb the fast neutron. All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be 52 MW. 51.61 MW. 53 MW. 57.5 MW. 52 MW. 51.61 MW. 53 MW. 57.5 MW. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is Kaplan. Impeller. Pelton. Francis. Kaplan. Impeller. Pelton. Francis. 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 = 250 MW and PG2 = 0 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 150 MW and PG2 = 100 MW PG1 = 0 MW and PG2 = 250 MW PG1 = 250 MW and PG2 = 0 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 150 MW and PG2 = 100 MW PG1 = 0 MW and PG2 = 250 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to reduce the vibrations at the point of support All of these increase the sag reduce the tension reduce the vibrations at the point of support All of these increase the sag reduce the tension ANSWER DOWNLOAD EXAMIANS APP