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Bipolar Junction Transistors (BJT)

Q1: If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point:

A off the load line

B nowhere

C up

D down

ANS:D - down

Q point is find with respect to Ic and Vce. Beta is fixed so if Ic or Ie is decreased then definitely Ib is decreased. If Ib decreased then Ic will also decreased and according to graph of load line the Q point will be decreased.



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