Power Systems For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station? Pelton Kaplan Francis None of these Pelton Kaplan Francis None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 31.7 35.45 23.9 38.6 31.7 35.45 23.9 38.6 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is true? Corona loss increases with increase in conductor size and increase in supply frequency increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and increase in supply frequency increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Positive, negative and zero sequence impedances of line are 2,2 and 5 pu respectively. Find self and mutual impedances respectively? 2 and 5 pu 2 and 2 pu 3 and 1 pu 1 and 3 pu 2 and 5 pu 2 and 2 pu 3 and 1 pu 1 and 3 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 45 kV 36 kV 32 kV 40 kV 45 kV 36 kV 32 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Phase shift occurs due to which of the following components? inductance conductance both 1 and 2 capacitance inductance conductance both 1 and 2 capacitance ANSWER DOWNLOAD EXAMIANS APP