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 210 Ω 840 Ω 420 Ω 400 Ω 210 Ω 840 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a long, two wire line composed of solid round conductors. The radius of both conductors is 0.25 cm and distance between their centers is 100 cm. If this distance is doubled, then the inductance per unit length. Decrease but does not halves. Halves. Increase but does not doubled. Doubled. Decrease but does not halves. Halves. Increase but does not doubled. Doubled. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generating station has a maximum demand of 100 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is 80 MW 15 MW 20 MW 10 MW 80 MW 15 MW 20 MW 10 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the total installed power capacity (MW) in West Bengal as published by ministry of power in 2011? 15515.22. 6114.05. 10000.32. 8113.27. 15515.22. 6114.05. 10000.32. 8113.27. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? both 1 and 2 over current relays Buccholz relays Differential relays both 1 and 2 over current relays Buccholz relays Differential relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 10 20 4 8 10 20 4 8 ANSWER DOWNLOAD EXAMIANS APP
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