Power Systems The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by Zs = 0.7 pu, Zm =0.2 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.2 pu, Zm =0.7 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.2 pu, Zm =0.7 pu 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) (Zl - Zs)/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) 2Zs/(Zs + Zl) (Zl - Zs)/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) 2Zs/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, the symmetrical breaking capacity is 2000 MVA, 3 secs. Then the making capacity is 5200 MVA. 5100 MVA. 5500 MVA. 5000 MVA. 5200 MVA. 5100 MVA. 5500 MVA. 5000 MVA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively? 0.8, 0.8 and 0.8 pu 0.6, 0.6 and 1.2 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 0.6 pu 0.8, 0.8 and 0.8 pu 0.6, 0.6 and 1.2 pu 0.6, 0.8 and 1.2 pu 0.6, 0.6 and 0.6 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which turbine is ideally suited to pumped storage plants Francis. Impeller. Kaplan. Pelton. Francis. Impeller. Kaplan. Pelton. ANSWER DOWNLOAD EXAMIANS APP
Power Systems At slack bus, which one of the following combinations of variables is not specified? P and V Q and V P and Q V and δ P and V Q and V P and Q V and δ ANSWER DOWNLOAD EXAMIANS APP
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