Power Systems Which following statement are not true for line parameters R, L, G and C of transmission line Both R and G depend on the conductivity of conductor forming the line. G = 1/R where G is conductance of line. LC = μ ε and RG = σ ε. All of above. Both R and G depend on the conductivity of conductor forming the line. G = 1/R where G is conductance of line. LC = μ ε and RG = σ ε. All of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where air circuit breakers are used? Up to 66 kV. Up to 11 kV. Up to 33 kV. Up to 12 kV. Up to 66 kV. Up to 11 kV. Up to 33 kV. Up to 12 kV. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 2.63 msec 1.47 msec 9.68 4.68 msec 2.63 msec 1.47 msec 9.68 4.68 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems What type of back up protection is used for alternators? IDMT relay. Impedance relay. Buchholz relay. Mho relay. IDMT relay. Impedance relay. Buchholz relay. Mho relay. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relationships are not valid for short transmission lines All of these B = C = Z A = D = 1 Is = Ir All of these B = C = Z A = D = 1 Is = Ir ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are Flexible power has to be available. All of these Cost of electrical energy per KWh is to be minimum Reliable power has to be available Flexible power has to be available. All of these Cost of electrical energy per KWh is to be minimum Reliable power has to be available ANSWER DOWNLOAD EXAMIANS APP
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