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 400 Ω 210 Ω 840 Ω 420 Ω 400 Ω 210 Ω 840 Ω 420 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The area under a flow duration curve represents total quantity of run-off during that period. maximum rate of run-off during the period. total power available. total of units of energy available. total quantity of run-off during that period. maximum rate of run-off during the period. total power available. total of units of energy available. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is used for protection of short lines. none of these. long lines. medium lines. short lines. none of these. long lines. medium lines. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will reduce the heat increase the thermal efficiency reduce the thermal efficiency both 2 and 3 reduce the heat increase the thermal efficiency reduce the thermal efficiency both 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Communications lines are treated as any of the above medium transmission lines long transmission lines short transmission lines any of the above medium transmission lines long transmission lines short transmission lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems Load frequency control is achieved by properly matching the individual machines turbine inputs. reactive powers. generated voltages. generator ratings. turbine inputs. reactive powers. generated voltages. generator ratings. ANSWER DOWNLOAD EXAMIANS APP
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