Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Δ-Y connection Y-Δ connection Y-Y connection Δ-Δ connection Δ-Y connection Y-Δ connection Y-Y connection Δ-Δ connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be 7.936 pu 10.936 pu 8.936 pu 9.936 pu 7.936 pu 10.936 pu 8.936 pu 9.936 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ground capacitance existing between transmission line and ground is 4µF. Find the inductive reactance of the peterson coil for compensation of arcing grounds? 855.26 Ω 625.35 Ω 265.25 Ω 0.844 Ω 855.26 Ω 625.35 Ω 265.25 Ω 0.844 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Corona is accompanied by power loss and interference violet visible light hissing sound All of these power loss and interference violet visible light hissing sound All of these 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? 60° 45° 30° 35° 60° 45° 30° 35° ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which statement is not correct for the transmission line parameter R, L, G and C For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog The line parameter R,L,G and C are uniformly distributed along the entire length of the line C. At high frequencies at which most of communication system operate the internal inductance of the conductor is neglected. G = I/R. R is the AC resistance per unit length of conductor C. For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog The line parameter R,L,G and C are uniformly distributed along the entire length of the line C. At high frequencies at which most of communication system operate the internal inductance of the conductor is neglected. G = I/R. R is the AC resistance per unit length of conductor C. ANSWER DOWNLOAD EXAMIANS APP
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