Power Systems Reflection coefficient of voltage is Rv (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) (Zs - Zl)/(Zs + Zl) 2Zl/(Zs + Zl) (Zl - Zs)/(Zs + Zl) 2Zs/(Zs + Zl) ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which device is used for protection of equipment from from damage caused by overload or short circuit? lightning arrester CVT current transformer circuit breaker lightning arrester CVT current transformer circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a thermal power plants, pressure in the working fluid cycle is developed by superheater. turbine. feed water pump. condenser. superheater. turbine. feed water pump. condenser. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If L and C are 4 mH and 0.0001 μF respectively a current chop of magnitude 50 Amp would induced a voltage 200 kV. 100 kV. 50 kV. 400 kV. 200 kV. 100 kV. 50 kV. 400 kV. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Fault calculations using computer are usually done by None of these Z bus method Y bus method either 1 or 2 None of these Z bus method Y bus method either 1 or 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 2.5 pu 3.75 pu 4.28 pu 7.25 pu 2.5 pu 3.75 pu 4.28 pu 7.25 pu ANSWER DOWNLOAD EXAMIANS APP
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