Power Systems The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by Zs = 0.5 pu, Zm =0.6 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.2 pu, Zm =0.7 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.7 pu, Zm =0.2 pu Zs = 0.2 pu, Zm =0.7 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission on line is Directly proportional to square root of its length. Directly proportional to its length. Independent of its length. Inversely proportional to its length. Directly proportional to square root of its length. Directly proportional to its length. Independent of its length. Inversely proportional to its length. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 % 3 × 106 kWh. 4.06 × 106 kWh. 5 × 106 kWh. 2.044 × 106 kWh. 3 × 106 kWh. 4.06 × 106 kWh. 5 × 106 kWh. 2.044 × 106 kWh. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The only place where slip ring induction motors used in thermal power plants is conveyors. none of above. coal handling plant. lubrication oil pumps. conveyors. none of above. coal handling plant. lubrication oil pumps. ANSWER DOWNLOAD EXAMIANS APP
Power Systems String efficiency depends upon all of these. voltage rating of whole string. no. of SCR in the string. voltage rating of one SCR. all of these. voltage rating of whole string. no. of SCR in the string. voltage rating of one SCR. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a transmission line can be increased by addition of lumped capacitance in series increasing its voltage level addition of lumped inductance in parallel both 1 and 3 addition of lumped capacitance in series increasing its voltage level addition of lumped inductance in parallel both 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
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