Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 2nd harmonic current. 7th harmonic current. 3rd harmonic current. 5th harmonic current. 2nd harmonic current. 7th harmonic current. 3rd harmonic current. 5th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of higher transmission voltage is/are 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 All of these Area of cross section and volume of the conductor is reduced Power transfer capability of the transmission line is increased ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a long transmission line, if we increase the length of the line, the parameters A and B respectively increases and increases increases and decreases decreases and increases decreases and decreases increases and increases increases and decreases decreases and increases decreases and decreases ANSWER DOWNLOAD EXAMIANS APP
Power Systems Uses of diesel power stations emergency plants. All of these standby plants. peak load plant. emergency plants. All of these standby plants. peak load plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? either 1 or 2 Both power and telecommunication lines Power line None of these either 1 or 2 Both power and telecommunication lines Power line None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be 0.15 pu 0.05 pu 0.25 pu 0.45 pu 0.15 pu 0.05 pu 0.25 pu 0.45 pu ANSWER DOWNLOAD EXAMIANS APP
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