Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 4, 0.4 100, 10 100, 0.4 4, 10 4, 0.4 100, 10 100, 0.4 4, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by All of these decreasing the supply frequency increasing the distance between the conductor increasing the radius of the conductor All of these decreasing the supply frequency increasing the distance between the conductor increasing the radius of the conductor ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays are used in protection of medium transmission lines? any of the above Admittance relays Mho relays Impedance relays any of the above Admittance relays Mho relays Impedance relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CT is connected in ___________________ with the line. series. across. both A and B. not connected. series. across. both A and B. not connected. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection switch is used to provide protection against over voltage. overload. short circuit. temperature. over voltage. overload. short circuit. temperature. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Oxide film arrestor has which of the following properties? Does not require daily charging. It is expensive. Installed at points of transmission line where daily visit is difficult. Both A and B. Does not require daily charging. It is expensive. Installed at points of transmission line where daily visit is difficult. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
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