Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 7th harmonic current. 5th harmonic current. 3rd harmonic current. 2nd harmonic current. 7th harmonic current. 5th harmonic current. 3rd harmonic current. 2nd harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following plants has the maximum eapital cost Nuclear plants. Steam plants. Hydro-plants. Diesel plants. Nuclear plants. Steam plants. Hydro-plants. Diesel plants. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line 0.018 per Km. 0.01 + j 0.02 per Km. None of them. 0.09 + j 0.018 per Km. 0.018 per Km. 0.01 + j 0.02 per Km. None of them. 0.09 + j 0.018 per Km. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An hydro-graph indicates the average run off during the period. the discharge at any time during the period under consideration. All of these the maximum and minimum run off during the period. the average run off during the period. the discharge at any time during the period under consideration. All of these the maximum and minimum run off during the period. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (0.5 + j1 ) pu (1 + j2 ) pu (2 + j4 ) pu (4 + j8 ) pu (0.5 + j1 ) pu (1 + j2 ) pu (2 + j4 ) pu (4 + j8 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? over current relays both 1 and 2 Buccholz relays Differential relays over current relays both 1 and 2 Buccholz relays Differential relays ANSWER DOWNLOAD EXAMIANS APP
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