Answer / hm

when L-L fault occurs, electrical power Pe (generated by
alternator) becomes zero but mechanical power Pm (turbine
giving to alternator) remains as it is i.e. Pm > Pe. so
alternator tries to retain its stability(see power swing
curve for details) by deaccelerating rotor(up to synchronous
speed).if area under acceleration is equal to area under
deacceleration machine retains its stability else protecting
relay trips the machine.

Answer / senthil

SHORT CIRCUIT MEANS CURRENT HIGH .IT DAMAGE THE EQUIMENT

Answer / guru

The Generator runs on less load (Means Less current) and
the power is not generated to its full capacity.

Why did call copper as a electrical conductor?

2 Answers   ABB,

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Hi, what is the temp of bus bar.

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i(1)= j0.5 p.u., i(2)= -j0.5 p.u., i(0) =j1 p.u. What kind of fault it is-- a)l-l ,b)l-l-g, c)l-l-l-g, d)l-g.

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why only dc is given as excitation...why not ac???

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what is the working principle of ceiling fan and table fan?

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