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Author Archives: Anonymous

For a medium line, VS=458kVLL, and line parameters are as fo…

For a medium line, VS=458kVLL, and line parameters are as follows: A=D=0.952

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The rms value of v(t)=Vmax cos(wt) is given by

The rms value of v(t)=Vmax cos(wt) is given by

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In the following power system, if  prefault voltage at Bus 2…

In the following power system, if  prefault voltage at Bus 2 is 1 pu, and subtransient reactance of generators are 0.15 pu, what is the approximate magnitude of a 3-phase bolted fault current at Bus 2? Neglect resistors and loads. PS(2).png

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In the following power system, what is the imaginary part of…

In the following power system, what is the imaginary part of Y22? PS(2).png

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What is the main advantage of using per unit system?

What is the main advantage of using per unit system?

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In the following power system, power flow solution will dete…

In the following power system, power flow solution will determine how many main unknowns? PS(2).png

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A transmission line has the following parameters: z=0.02+j0….

A transmission line has the following parameters: z=0.02+j0.33 S/km y=j4.7×10-6 S/km Length=300 If sending and receiving end voltages are 500kV, what is its maximum theoretical real power transmission capability? 

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In the following power system, if V2∠δ2= 0.9717∠-2.7o , what…

In the following power system, if V2∠δ2= 0.9717∠-2.7o , what is the real power loss on Line 12? (Sb=100MVA) PS(2).png

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In 1957, Republican President Dwight D. Eisenhower federaliz…

In 1957, Republican President Dwight D. Eisenhower federalized local National Guard troops to enforce the desegregation of: A) Little Rock High School B) Louisiana State University C) University of Alabama D) Mississippi State 

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True or False. Prior to his election as Vice-President in 19…

True or False. Prior to his election as Vice-President in 1960, Senator Lyndon Baines Johnson of Texas had usually supported segregation laws in the South.   A) True B) False 

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