Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 25% 33.33% 75% 66.66% 25% 33.33% 75% 66.66% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A loss less transmission line has a length of 600 km, find the phase shift of voltage signal? 45° 90° 42° 36° 45° 90° 42° 36° ANSWER DOWNLOAD EXAMIANS APP
Power Systems Pin insulators are used up to 120 kV any voltage level 11 kV 33 kV 120 kV any voltage level 11 kV 33 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Plain oil CB. Minimum oil CB. Air blast CB. Air break CB. Plain oil CB. Minimum oil CB. Air blast CB. Air break CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? any of the above Temperature Over load Short circuit any of the above Temperature Over load Short circuit ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? skin effect switching over voltage radio interference lighting voltage skin effect switching over voltage radio interference lighting voltage ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS