Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead -10% -6.92% 10% 6.92% -10% -6.92% 10% 6.92% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is 16 10 6 2 16 10 6 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 13 20 10 21 13 20 10 21 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a two plant system, the load is connected to plant number 2. The loss coefficients are B11 is non zero,B22 = B12 = 0 B11,B22 are non zero,B12 = 0 B11,B12 are non zero ,B22 = 0 B11,B22,B12 are non zeros B11 is non zero,B22 = B12 = 0 B11,B22 are non zero,B12 = 0 B11,B12 are non zero ,B22 = 0 B11,B22,B12 are non zeros ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.1 0.001 1000 10 0.1 0.001 1000 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive sequence reactance will be equal to negative sequence if the equipment is transformer and transmission lines. none of these. motor. generator. transformer and transmission lines. none of these. motor. generator. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS