Power Systems Mho relay is used for protection of long lines. medium lines. none of these. short lines. long lines. medium lines. none of these. short lines. 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. 24. 12. 6. 16. 24. 12. 6. 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 transmission line parameters A and B are 0.9∠0° and 200∠90° respectively. Find the shunt reactor required to compensate the ferranti effect? 750 Ω 3000 Ω 2000 Ω 1500 Ω 750 Ω 3000 Ω 2000 Ω 1500 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Main bus bar protection scheme is /are none of these. fault bus protection. both fault bus and differential protection. differential protection. none of these. fault bus protection. both fault bus and differential protection. differential protection. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? -0.52 Hz 50 Hz 0.52 Hz 0.48 Hz -0.52 Hz 50 Hz 0.52 Hz 0.48 Hz ANSWER DOWNLOAD EXAMIANS APP
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