Power Systems Oxide film arrestor has which of the following properties? Does not require daily charging. It is expensive. Installed at points of transmission line where daily visit is difficult. Both A and B. Does not require daily charging. It is expensive. Installed at points of transmission line where daily visit is difficult. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string type insulator has three units with self capacitance C and ground capacitance of 0.2 C having a string efficiency of 76% 78% 80% 82% 76% 78% 80% 82% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are advantages of N-R method? Applicable for large power system network both 1 and 2 Time taken for each iteration is less Number of iterations are less Applicable for large power system network both 1 and 2 Time taken for each iteration is less Number of iterations are less ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of 8 MJ/MVA 2 MJ/MVA 4 MJ/MVA 16 MJ/MVA 8 MJ/MVA 2 MJ/MVA 4 MJ/MVA 16 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 1 0.93 0.882 1.13 1 0.93 0.882 1.13 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which following statement are not true for line parameters R, L, G and C of transmission 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. Both R and G depend on the conductivity of conductor forming the line. G = 1/R where G is conductance of line. ANSWER DOWNLOAD EXAMIANS APP
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