Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (2 + j4 ) pu (1 + j2 ) pu (0.5 + j1 ) pu (4 + j8 ) pu (2 + j4 ) pu (1 + j2 ) pu (0.5 + j1 ) pu (4 + j8 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠°90 Ω, C = 0.5*10^-6∠90° ℧. Find Charging current under no load? 0.344∠90° A/phase 0.512∠90° A/phase 1.144∠90° A/phase 0.144∠90° A/phase 0.344∠90° A/phase 0.512∠90° A/phase 1.144∠90° A/phase 0.144∠90° A/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems The rate of rise of re-striking voltage is dependent upon inductance of the system only both 1 and 2 capacitance of the system only resistance of the system only inductance of the system only both 1 and 2 capacitance of the system only resistance of the system only ANSWER DOWNLOAD EXAMIANS APP
Power Systems The value of off diagonal elements is sum of admittances connected at bus i which is connected between bus i and bus j with negative sign sum of admittances connected at bus j which is connected between bus i and bus j with positive sign sum of admittances connected at bus i which is connected between bus i and bus j with negative sign sum of admittances connected at bus j which is connected between bus i and bus j with positive sign ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 initial cost is low smooth voltage regulation is possible by controlling excitation single unit can be used as both capacitance and inductor by adjusting the excitation both 1 and 2 initial cost is low ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant Use of high pressure. All of these Use of steam for heating of boiler feed water. Reheat of steam an intermediate stages. Use of high pressure. All of these Use of steam for heating of boiler feed water. Reheat of steam an intermediate stages. ANSWER DOWNLOAD EXAMIANS APP
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