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. All of above. LC = μ ε and RG = σ ε. Both R and G depend on the conductivity of conductor forming the line. G = 1/R where G is conductance of line. All of above. LC = μ ε and RG = σ ε. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 90% 75% 50% 86%% 90% 75% 50% 86%% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation? 0.8 lag and 0.8 lead 0.6 lag and 0.8 lead 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead 0.8 lag and 0.8 lead 0.6 lag and 0.8 lead 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base? 0.2 pu 1 pu 0.25 pu 5 pu 0.2 pu 1 pu 0.25 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines reactive powers. generated voltages. generator ratings. turbine inputs. reactive powers. generated voltages. generator ratings. turbine inputs. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Due to corona, charging current increases All of these power loss increases interference increases charging current increases All of these power loss increases interference increases ANSWER DOWNLOAD EXAMIANS APP
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