Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 52.84 kV 48.36 kV 20 kV 83.76 kV 52.84 kV 48.36 kV 20 kV 83.76 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will increase the thermal efficiency reduce the heat both 2 and 3 reduce the thermal efficiency increase the thermal efficiency reduce the heat both 2 and 3 reduce the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gas coolled reactor use heavy water as coolant as well as moderator. use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c. use CO2. or helium as coolant and graphite the moderator. both B and C. use heavy water as coolant as well as moderator. use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c. use CO2. or helium as coolant and graphite the moderator. both B and C. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation 20060 J. 23060 J. 20160 J. 25060 J. 20060 J. 23060 J. 20160 J. 25060 J. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 100 MW and PG2 = 150 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Main bus bar protection scheme is /are both fault bus and differential protection. fault bus protection. differential protection. none of these. both fault bus and differential protection. fault bus protection. differential protection. none of these. ANSWER DOWNLOAD EXAMIANS APP
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