Power Systems For a 500 Hz frequency excitation, a 100 km long power line will be modelled as shunt capacitor any of the above medium transmission line long transmission line shunt capacitor any of the above medium transmission line long transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? skin effect switching over voltage lighting voltage radio interference skin effect switching over voltage lighting voltage radio interference ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Halves. Decrease but does not halves. Doubled. Increase but does not doubled. Halves. Decrease but does not halves. Doubled. Increase but does not doubled. 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 LLL LG LL LLG LLL LG LL ANSWER DOWNLOAD EXAMIANS APP
Power Systems Per unit of any quantity is defined as base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following matrix is used for load flow studies? Unit matrix null matrix Y bus matrix Z bus matrix Unit matrix null matrix Y bus matrix Z bus matrix ANSWER DOWNLOAD EXAMIANS APP
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