Power Systems The use of high speed circuit breakers improves system stability. reduces the short circuit current. decrease system stability. increased the short circuit current. improves system stability. reduces the short circuit current. decrease system stability. increased the short circuit current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The receiving end voltage for a long line under no load condition is any of the above equal to the sending end voltage more than the sending end voltage less than the sending end voltage any of the above equal to the sending end voltage more than the sending end voltage less than the sending end voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LLG LG LL LLL LLG LG LL LLL ANSWER DOWNLOAD EXAMIANS APP
Power Systems Objectives of power system is/are both 1 and 2 Rated voltage and frequency has to be supplied to the consumers Cost of electrical energy per KWh is to be minimum nether 1 nor 2 both 1 and 2 Rated voltage and frequency has to be supplied to the consumers Cost of electrical energy per KWh is to be minimum nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stability of a transmission line can be increased by shunt capacitor both 1 and 2 series capacitor shunt reactor shunt capacitor both 1 and 2 series capacitor shunt reactor ANSWER DOWNLOAD EXAMIANS APP
Power Systems The value of off diagonal elements is sum of admittances connected at bus i sum of admittances connected at bus j which is connected between bus i and bus j with negative sign which is connected between bus i and bus j with positive sign sum of admittances connected at bus i sum of admittances connected at bus j which is connected between bus i and bus j with negative sign which is connected between bus i and bus j with positive sign ANSWER DOWNLOAD EXAMIANS APP
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