Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. None of above 14 %. 28 %. 56 %. None of above 14 %. 28 %. 56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which following statement are not true for line parameters R, L, G and C of transmission line All of above. G = 1/R where G is conductance of line. LC = μ ε and RG = σ ε. Both R and G depend on the conductivity of conductor forming the line. All of above. G = 1/R where G is conductance of line. LC = μ ε and RG = σ ε. Both R and G depend on the conductivity of conductor forming the line. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Condition for maximum voltage regulation tanφ = X/R cosφ = X/R cosφ = R/X tanφ = R/X tanφ = X/R cosφ = X/R cosφ = R/X tanφ = R/X ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CT is connected in ___________________ with the line. series. not connected. across. both A and B. series. not connected. across. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of All of these medium transmission lines only short transmission lines only long transmission lines only All of these medium transmission lines only short transmission lines only long transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems The characteristic impedance of a transmission line is Independent of its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. Directly proportional to its length. Independent of its length. Directly proportional to square root of its length. Inversely proportional to square root of its length. Directly proportional to its length. ANSWER DOWNLOAD EXAMIANS APP
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