Power Systems In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is 55.56 MVAr. 61.73 MVAr. 45.0 MVAr. 40.5 MVAr. 55.56 MVAr. 61.73 MVAr. 45.0 MVAr. 40.5 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 30-40% 60-70% 20-25% 45-55% 30-40% 60-70% 20-25% 45-55% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? switching over voltage lighting voltage radio interference skin effect switching over voltage lighting voltage radio interference skin effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance Z(pu) is given by ZΩ* (MVA)b/(KV)²b ZΩ* (MVA)b/((KV)²b *100) ZΩ* (kVA)b/(KV)²b ZΩ* (MVA)b*100/(KV)²b ZΩ* (MVA)b/(KV)²b ZΩ* (MVA)b/((KV)²b *100) ZΩ* (kVA)b/(KV)²b ZΩ* (MVA)b*100/(KV)²b ANSWER DOWNLOAD EXAMIANS APP
Power Systems In case of failure of prime mover of the generator, which type of relay is used? reverse power relay impedance relay distance relays offset mho relay reverse power relay impedance relay distance relays offset mho relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems For n bus power system size of Y bus matrix is n×n (n-1)×(n-2) (n-1)×(n-1) (n-2)×(n-2) n×n (n-1)×(n-2) (n-1)×(n-1) (n-2)×(n-2) ANSWER DOWNLOAD EXAMIANS APP
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