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 When a pumped storage power plant is operated in conjunction with a steam power plant the operating cost of the steam plant become optimum chances of the tripping of the system decrease All of these load factor of the steam plant is increased the operating cost of the steam plant become optimum chances of the tripping of the system decrease All of these load factor of the steam plant is increased ANSWER DOWNLOAD EXAMIANS APP
Power Systems The capacitance of an overhead transmission line increases with both 1 and 2 neither 1 nor 2 increase in height of conductors above ground increase in mutual geometrical mean distance both 1 and 2 neither 1 nor 2 increase in height of conductors above ground increase in mutual geometrical mean distance ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the effects of corona All of these interference decreases charging current increases power loss decreases All of these interference decreases charging current increases power loss decreases ANSWER DOWNLOAD EXAMIANS APP
Power Systems An ACSR conductor has a diameter of 2 cm has internal inductance of 0.05 mH/Km. If this ACSR is replaced with another having a diameter of 4 cm then its internal inductance is 0.025 mH/Km 0.05 mH/Km 0.1 mH/Km 0 mH/Km 0.025 mH/Km 0.05 mH/Km 0.1 mH/Km 0 mH/Km 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. Vacuum CB. Oil CB. Any of these. Air blast CB. Vacuum CB. Oil CB. Any of these. ANSWER DOWNLOAD EXAMIANS APP
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