Power Systems Length of short transmission line is up to any of the above 150 km 80 km 40 km any of the above 150 km 80 km 40 km ANSWER DOWNLOAD EXAMIANS APP
Power Systems Plug setting of a relay can be altered by varying air gap of magnetic path. adjustable back up stop. no. of ampere-turns. none of these. air gap of magnetic path. adjustable back up stop. no. of ampere-turns. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plant work? Carnot cycle Bell-Coleman cycle Otto cycle Rankine cycle Carnot cycle Bell-Coleman cycle Otto cycle Rankine cycle ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 420 Ω 400 Ω 840 Ω 210 Ω 420 Ω 400 Ω 840 Ω 210 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong? Slow convergence A good initial guess for voltages is essential for convergence Choice of slack bus affects the convergence Unreliable convergence Slow convergence A good initial guess for voltages is essential for convergence Choice of slack bus affects the convergence Unreliable convergence ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always ANSWER DOWNLOAD EXAMIANS APP
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