Power Systems The positive (Z1), negative (Z2) and zero sequence (Z0) impedances of a transmission line follows the relation (Z1 = Z2) < Z0 Z1 = Z2 = Z0 (Z1 = Z2) > Z0 any of the above (Z1 = Z2) < Z0 Z1 = Z2 = Z0 (Z1 = Z2) > Z0 any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 100, 0.4 4, 0.4 100, 10 4, 10 100, 0.4 4, 0.4 100, 10 4, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The flow duration curve at a given head of a hydroelectric plant is used to determine total power available at the site. load factory at the plant. total units of energy available. diversity factor for the plant. total power available at the site. load factory at the plant. total units of energy available. diversity factor for the plant. 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% -10% 6.92% -6.92% 10% -10% 6.92% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bundled conductors are used for EHV transmission lines primarily for reducing the corona loss voltage drop across the line surge impedance of the line copper loss corona loss voltage drop across the line surge impedance of the line copper loss ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Halves. Decrease but does not halves. Increase but does not doubled. Doubled. Halves. Decrease but does not halves. Increase but does not doubled. Doubled. ANSWER DOWNLOAD EXAMIANS APP
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