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 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 16 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 16 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines generator ratings. turbine inputs. reactive powers. generated voltages. generator ratings. turbine inputs. reactive powers. generated voltages. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° ℧. Find the no load receiving end voltage? 500 kV 320 kv 600 kV 400 kV 500 kV 320 kv 600 kV 400 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The charging current of a 400 kV line is more than that of a 220 kV line of the same length? either 1 or 2 None of these False True either 1 or 2 None of these False True ANSWER DOWNLOAD EXAMIANS APP
Power Systems Inductance of transmission line will decrease when GMD increase and GMR decrease GMD decrease and GMR increase both GMD and GMR increase both GMD and GMR decrease GMD increase and GMR decrease GMD decrease and GMR increase both GMD and GMR increase both GMD and GMR decrease ANSWER DOWNLOAD EXAMIANS APP
Power Systems In which of the following configuration power transferability is higher? horizontal configuration triangular configuration same in both configuration None of these horizontal configuration triangular configuration same in both configuration None of these ANSWER DOWNLOAD EXAMIANS APP
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