Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 1.47 msec 4.68 msec 2.63 msec 9.68 1.47 msec 4.68 msec 2.63 msec 9.68 ANSWER DOWNLOAD EXAMIANS APP
Power Systems For flat voltage profile system, voltage regulation is 100% 50% any of the above 0% 100% 50% any of the above 0% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum power transfer capability of transmission line can be increased by Using bundled conductors Using series capacitance Parallel transmission lines All of these Using bundled conductors Using series capacitance Parallel transmission lines All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is 6.06 Ω / phase. 4.65 Ω / phase. 8.06 Ω / phase. 2.26 Ω / phase. 6.06 Ω / phase. 4.65 Ω / phase. 8.06 Ω / phase. 2.26 Ω / phase. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of higher transmission voltage is/are All of these Area of cross section and volume of the conductor is reduced Power transfer capability of the transmission line is increased Transmission line losses are reduced All of these Area of cross section and volume of the conductor is reduced Power transfer capability of the transmission line is increased Transmission line losses are reduced ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications Ash handling unit. Condenser. Pulversing unit. Cooling tower. Ash handling unit. Condenser. Pulversing unit. Cooling tower. ANSWER DOWNLOAD EXAMIANS APP
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