Power Systems Counter poise is used for proper discharging of lighting surges reduce losses less surge impedance more surge impedance proper discharging of lighting surges reduce losses less surge impedance more surge impedance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.52 Hz -0.52 Hz 50 Hz 0.48 Hz 0.52 Hz -0.52 Hz 50 Hz 0.48 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 400 MVA 125 MVA 100 MVA 500 MVA 400 MVA 125 MVA 100 MVA 500 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand? 1.5 cm 5 cm 1 cm 15 cm 1.5 cm 5 cm 1 cm 15 cm ANSWER DOWNLOAD EXAMIANS APP
Power Systems A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is 2 10 16 6 2 10 16 6 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In which of the following transmission lines capacitance effect is negligible? long transmission lines both 1 and 3 shoart transmission lines medium transmission lines long transmission lines both 1 and 3 shoart transmission lines medium transmission lines ANSWER DOWNLOAD EXAMIANS APP
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