Power Systems The power output from an hydroelectric plants depend on type of dam, head, system efficiency. type of turbine, type of dam and type of catchment area. type of dam, type of catchment area and discharge. discharge, system efficiency. type of dam, head, system efficiency. type of turbine, type of dam and type of catchment area. type of dam, type of catchment area and discharge. discharge, system efficiency. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? 0.56 -0.92 -0.56 0.92 0.56 -0.92 -0.56 0.92 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load current in short circuit calculations are neglected because both 1 and 2 short circuit currents are greatly out of phase with load currents short circuit currents are much larger than load currents nether 1 nor 2 both 1 and 2 short circuit currents are greatly out of phase with load currents short circuit currents are much larger than load currents nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. The line is connected to a generator delivering 200 MW. Find the load angle with out and with compensation respectively? 30° and 26° 30° and 45° 26° and 30° 45° and 26° 30° and 26° 30° and 45° 26° and 30° 45° and 26° ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conductor carries more current on surface as compared to core. This is called as All of these corona effect skin effect unsymmetrical fault All of these corona effect skin effect unsymmetrical fault ANSWER DOWNLOAD EXAMIANS APP
Power Systems Taking the density of water to be 1000 kg/m³, how much power would be developed by a hydro electric generator unit, assume 100% efficiency, with 1 m head and 1 m³/s discharge? 19.60 kW 9.81 kW 2.90 kW 4.45 kW 19.60 kW 9.81 kW 2.90 kW 4.45 kW ANSWER DOWNLOAD EXAMIANS APP
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