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? 5 pu 5.353 pu 7 pu 3.535 pu 5 pu 5.353 pu 7 pu 3.535 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 25. 15. 50. 10. 25. 15. 50. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Doubled. Decrease but does not halves. Halves. Increase but does not doubled. Doubled. Decrease but does not halves. Halves. Increase but does not doubled. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The VSWR of transmission line is Directly proportional to voltage minimum and inversely proportional to voltage maximum. Directly proportional to characteristic impedance and inversely to load impedance. Directly proportional to load impedance and inversely to characteristic impedance. Proportional to load and characteristic impedance. Directly proportional to voltage minimum and inversely proportional to voltage maximum. Directly proportional to characteristic impedance and inversely to load impedance. Directly proportional to load impedance and inversely to characteristic impedance. Proportional to load and characteristic impedance. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The power output of a nuclear power station is proportional to square root of the rate at which fission reaction occurs. square of the rate at which fission reaction occurs. none of above. the rate at which fission reaction occurs. square root of the rate at which fission reaction occurs. square of the rate at which fission reaction occurs. none of above. the rate at which fission reaction occurs. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the function of economiser in steam boilers improving thermal efficiency collect ash particals cooling All of these improving thermal efficiency collect ash particals cooling All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS