Power Systems The characteristic impedance of a transmission on line is Directly proportional to its length. Independent of its length. Directly proportional to square root of its length. Inversely proportional to its length. Directly proportional to its length. Independent of its length. Directly proportional to square root of its length. Inversely proportional to its length. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A moderator material should have None of these large atomic mass. small atomic mass. may be any of the above. None of these large atomic mass. small atomic mass. may be any of the above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 400 Ω 800 Ω 200 Ω 0 Ω 400 Ω 800 Ω 200 Ω 0 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydro power plant of run off river type should be provided with pondage so that the firm capacity of plant is increased. pressure inside the turbine casing remains. operating head is controlled. kinetic energy of the running water is fully utilized. firm capacity of plant is increased. pressure inside the turbine casing remains. operating head is controlled. kinetic energy of the running water is fully utilized. 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? 456 MW 478 MW 386 MW 400 MW 456 MW 478 MW 386 MW 400 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 3.75 pu 4.28 pu 2.5 pu 7.25 pu 3.75 pu 4.28 pu 2.5 pu 7.25 pu ANSWER DOWNLOAD EXAMIANS APP
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