Power Systems The characteristic impedance of a transmission on line is Inversely proportional to its length. Directly proportional to its length. Directly proportional to square root of its length. Independent of its length. Inversely proportional to its length. Directly proportional to its length. Directly proportional to square root of its length. Independent of its length. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plat work Carnot cycle. Rankine cycle. Bell - Coleman cycle. Otto cycle. Carnot cycle. Rankine cycle. Bell - Coleman cycle. Otto cycle. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 7 pu 5 pu 5.353 pu 3.535 pu 7 pu 5 pu 5.353 pu 3.535 pu 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? 10 20 21 13 10 20 21 13 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation? 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead 0.6 lag and 0.8 lead 0.8 lag and 0.8 lead 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead 0.6 lag and 0.8 lead 0.8 lag and 0.8 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems The arc voltage produced in an AC circuit breaker is always in phase with the arc current. in phase opposition with the arc current. leading the arc current by 90°. lagging the arc current by 90°. in phase with the arc current. in phase opposition with the arc current. leading the arc current by 90°. lagging the arc current by 90°. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS