Power Systems Operating cost of thermal power station is less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 3rd harmonic current. 2nd harmonic current. 7th harmonic current. 5th harmonic current. 3rd harmonic current. 2nd harmonic current. 7th harmonic current. 5th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Air blast CB. Oil CB. Any of these. Vacuum CB. Air blast CB. Oil CB. Any of these. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following materials is/are used as moderators? graphite beryllium heavy water All of these graphite beryllium heavy water All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Objectives of power system is/are nether 1 nor 2 both 1 and 2 Cost of electrical energy per KWh is to be minimum Rated voltage and frequency has to be supplied to the consumers nether 1 nor 2 both 1 and 2 Cost of electrical energy per KWh is to be minimum Rated voltage and frequency has to be supplied to the consumers ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 11.8% 88.2% 15% 85% 11.8% 88.2% 15% 85% ANSWER DOWNLOAD EXAMIANS APP
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