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. Increase but does not doubled. Halves. Doubled. Decrease but does not halves. Increase but does not doubled. Halves. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a fault occurs on any feeder, the fault current is much higher than with unsectional bus bar. none of these. much lower than with unsectional bus bar. equal to unsectional bus bar. much higher than with unsectional bus bar. none of these. much lower than with unsectional bus bar. equal to unsectional bus bar. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 52.84 kV 83.76 kV 48.36 kV 20 kV 52.84 kV 83.76 kV 48.36 kV 20 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to all of above. reduce water hammer. convert kinetic energy of water. increase flow rate of water. all of above. reduce water hammer. convert kinetic energy of water. increase flow rate of water. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The VSWR of transmission line is Directly proportional to load impedance and inversely to characteristic impedance. Directly proportional to characteristic impedance and inversely to load impedance. Proportional to load and characteristic impedance. Directly proportional to voltage minimum and inversely proportional to voltage maximum. Directly proportional to load impedance and inversely to characteristic impedance. Directly proportional to characteristic impedance and inversely to load impedance. Proportional to load and characteristic impedance. Directly proportional to voltage minimum and inversely proportional to voltage maximum. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 16. 12. 6. 24. 16. 12. 6. 24. ANSWER DOWNLOAD EXAMIANS APP
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