Power Systems In hydroelectric power plants operating cost is high and initial cost is low. both operating and initial cost are low. both operating and initial cost are high. operating cost is low and initial cost is high. operating cost is high and initial cost is low. both operating and initial cost are low. both operating and initial cost are high. operating cost is low and initial cost is high. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 0.93 1 0.882 1.13 0.93 1 0.882 1.13 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 0.2 pu 1.375 pu 2.4 pu 3.975 pu 0.2 pu 1.375 pu 2.4 pu 3.975 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Condition for zero voltage regulation is tanφ = X/R cosφ = R/X tanφ = R/X cosφ = X/R tanφ = X/R cosφ = R/X tanφ = R/X cosφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding? Peterson coil. Reactance. Resistance. Solid. Peterson coil. Reactance. Resistance. Solid. ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a pumped storage power plant is operated in conjunction with a steam power plant All of these load factor of the steam plant is increased chances of the tripping of the system decrease the operating cost of the steam plant become optimum All of these load factor of the steam plant is increased chances of the tripping of the system decrease the operating cost of the steam plant become optimum ANSWER DOWNLOAD EXAMIANS APP
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