Power Systems Attenuation occurs due to inductance conductance resistance both 1 and 3 inductance conductance resistance both 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Objectives of power system is/are Cost of electrical energy per KWh is to be minimum both 1 and 2 Rated voltage and frequency has to be supplied to the consumers nether 1 nor 2 Cost of electrical energy per KWh is to be minimum both 1 and 2 Rated voltage and frequency has to be supplied to the consumers nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A lossless power system has to serve a load of 250 MW. There are two generators(G1 and G2) in the system with cost curves C1 and C2 respectively defined as follows: C1 = PG1+0.055P²G1 C2 = 3 PG2 + 0.03 P²G2 Where PG1 and PG2 are the MW injections from generators G1 and G2 respectively. Thus, the minimum cost dispatch will be PG1 = 250 MW and PG2 = 0 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 0 MW and PG2 = 250 MW PG1 = 150 MW and PG2 = 100 MW PG1 = 250 MW and PG2 = 0 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 0 MW and PG2 = 250 MW PG1 = 150 MW and PG2 = 100 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)? 3 × 106 kV / sec. 1 × 106 kV / sec. 2 × 106 kV / sec. 3.5 × 106 kV / sec. 3 × 106 kV / sec. 1 × 106 kV / sec. 2 × 106 kV / sec. 3.5 × 106 kV / sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? All of these To remove dust particles setting on the bus bar conductors in the station switch yard To keep the air heaters clean To collect the dust particles from the flue gases All of these To remove dust particles setting on the bus bar conductors in the station switch yard To keep the air heaters clean To collect the dust particles from the flue gases ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a transformer is loaded, the secondary terminal voltage gains. That means power factor is zero. leading. lagging. unity. zero. leading. lagging. unity. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS