I dont quite understnd how AC n DC load lines wrk....Lets consider a BJT circuit....The dc load line is the locus of all the values of i_C and v_CE (i_C and v_CE refer to the instantaneous values,ie.ac+dc)....or in other words i_C and v_CE vary along the dc load line....right????What about the ac load line????Is the intersection of the ac and dc load lines the Q point????

 

hi,
Many of the questions you ask are easily answered by a Google search for the subject.
example:

transistor load lines - Yahoo! Search Results

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The AC and DC load lines can be the same line, or they can have different slopes depending on the circuit configuration. The intersection is the Q-point.

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Hello ericgibbs....i knw that there is tons of data available on the net on each n every qs i ask....but thats where the prblm lies....i get confused....i wud rather hav the opinion of xprts in the respective fields....moreover i can ask further questions if the need arises....thnx for the suggestion though....