Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (1 + j2 ) pu (0.5 + j1 ) pu (2 + j4 ) pu (4 + j8 ) pu (1 + j2 ) pu (0.5 + j1 ) pu (2 + j4 ) pu (4 + j8 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Counter poise is used for more surge impedance reduce losses proper discharging of lighting surges less surge impedance more surge impedance reduce losses proper discharging of lighting surges less surge impedance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Suspension type insulators are used for voltage beyond 33 kV 11 kV 440 V 230 V 33 kV 11 kV 440 V 230 V 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 4.45 kW 9.81 kW 2.90 kW 19.60 kW 4.45 kW 9.81 kW 2.90 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the methods of improving transient stability? Fast acting excitation control Fast acting governing system Dynamic breaking All of these Fast acting excitation control Fast acting governing system Dynamic breaking All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following represents the transmission or reflection coefficient of voltage Tv? (Zl = Surge impedance of load, Zs = Surge impedance of line) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zl/(Zs + Zl) (Zs - Zl)/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
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