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Q#1 OP-AMP and its Applications GATE EE 1994 MCQ +1 mark -0 marks

Given figure shows a two-stage small signal transistor feedback amplifier. Match the defective component (listed on the left hand side below) with its probable effect on the circuit (listed on the right hand side below)

(a) Capacitor  is open

(b) Capacitor  is open

(c) Capacitor  is open

(d)  is shorted

(P) All dc voltages normal,  increases marginally

(Q) Collector of  is at ,

(R) All dc voltages normal, gain of  stage increase  decrease

(S) All dc voltages normal,

(T) All dc voltages normal, overall gain of the amplifier increases,  increases

(U) No change

(a) => (S)
(b) => (R)
(c) => (T)
(d) => (Q)

(a) => (P)
(b) => (Q)
(c) => (R)
(d) => (S)

(a) => (S)
(b) => (R)
(c) => (P)
(d) => (U)

(a) => (U)
(b) => (R)
(c) => (T)
(d) => (P)

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