Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 12.5 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 125 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CT is connected in ___________________ with the line. series. not connected. across. both A and B. series. not connected. across. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of long transmission lines only medium transmission lines only short transmission lines only All of these long transmission lines only medium transmission lines only short transmission lines only All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A buchholz relay is used for protection of a transformer against all internal faults nether 1 nor 2 protection of a transformer against all external faults both 1 and 2 protection of a transformer against all internal faults nether 1 nor 2 protection of a transformer against all external faults both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following effects are associated with transmission line ferranti effect skin effect corona effect All of these ferranti effect skin effect corona effect All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statement is/are true?Zn both 1 and 2 The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit nether 1 nor 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit both 1 and 2 The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit nether 1 nor 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit ANSWER DOWNLOAD EXAMIANS APP
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