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 38.6 23.9 35.45 31.7 38.6 23.9 35.45 31.7 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 45 kA. 50 kA. 55 kA. 35 kA. 45 kA. 50 kA. 55 kA. 35 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The equation of area control error(ACE) is ACE = ΔPtie - b.Δf ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ACE = ΔPtie + b.Δf ACE = ΔPtie - b.Δf ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ACE = ΔPtie + b.Δf ANSWER DOWNLOAD EXAMIANS APP
Power Systems If all the sequence voltages at the fault point in a power system are equal, then the fault point is a LG LL LLG LLL LG LL LLG LLL 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. Find the load angle? 30° 60° 45° 35° 30° 60° 45° 35° ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation? 478 MW 400 MW 386 MW 456 MW 478 MW 400 MW 386 MW 456 MW ANSWER DOWNLOAD EXAMIANS APP
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