Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 420 Ω 210 Ω 400 Ω 840 Ω 420 Ω 210 Ω 400 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Under excited Synchronous phase modifier works as series capacitor any of the above shunt capacitor shunt reactor series capacitor any of the above shunt capacitor shunt reactor ANSWER DOWNLOAD EXAMIANS APP
Power Systems As the frequency of the system is increased, the charging MVAR None of these decreases increases remains unaffected None of these decreases increases remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are Cost of electrical energy per KWh is to be minimum Flexible power has to be available. All of these Reliable power has to be available Cost of electrical energy per KWh is to be minimum Flexible power has to be available. All of these Reliable power has to be available 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 5100 MVA. 5500 MVA. 5200 MVA. 5000 MVA. 5100 MVA. 5500 MVA. 5200 MVA. 5000 MVA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For some given transmission line the expression for voltage regulation is given by (Vs - Vr)/Vr *100%. Hence, this may either be a medium line or short line this expression is true for any line this must be a short line None of these this may either be a medium line or short line this expression is true for any line this must be a short line None of these ANSWER DOWNLOAD EXAMIANS APP
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