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 23.9 35.45 31.7 38.6 23.9 35.45 31.7 38.6 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Ferranti effect will not occur in which of the following transmission lines short transmission lines All of these long transmission lines medium transmission lines short transmission lines All of these long transmission lines medium transmission lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 20 sec. 10 sec. none of these. 5 sec. 20 sec. 10 sec. none of these. 5 sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a reactance of 1 Pu is operating at Vs = Vr = 1 Pu. The generator is connected at source end which is delivering 0.5 Pu of active power and the transmission line is compensated with a series capacitance of 0.5 Pu. Find the load angle with series capacitance compensation ? 29° 35.5° 10.5° 14.5° 29° 35.5° 10.5° 14.5° ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 - Φ, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 104.8 kA. 1200 A. 35 kA. 3600 A. 104.8 kA. 1200 A. 35 kA. 3600 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead -6.92% -10% 6.92% 10% -6.92% -10% 6.92% 10% ANSWER DOWNLOAD EXAMIANS APP
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