Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 2nd harmonic current. 3rd harmonic current. 7th harmonic current. 5th harmonic current. 2nd harmonic current. 3rd harmonic current. 7th harmonic current. 5th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a 3-phase, 400 kV transmission line is 400 Ω. The surge impedance loading is 1600 MW 200 MW 800 MW 400 MW 1600 MW 200 MW 800 MW 400 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? In case of parallel transmission lines fault current increases both 1 and 3 fault current reduces stability increases fault current increases both 1 and 3 fault current reduces stability increases ANSWER DOWNLOAD EXAMIANS APP
Power Systems The load duration curve for a system is 8 hours 30 MW, 16 hours 25 MW and 24 hours 20 MW. The load factor will be 0.44. 0.25. 0.83. 1.3. 0.44. 0.25. 0.83. 1.3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Asynchronous tie line is a DC transmission line either 1 or 2 AC transmission line None of these DC transmission line either 1 or 2 AC transmission line None of these 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 16 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 16 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
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