Explore topic-wise MCQs in Analog Circuits.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

For a high frequency response of a simple C.E. stage with a transconductance of gm, what is Cout?

A. Ccs – Cµ*(2 + 1/gm*R2)
B. Ccs + Cµ*(1 + 2/gm*R2)
C. Ccs – Cµ*(1 + 1/gm*R2)
D. Ccs + Cµ*(1 + 1/gm*R2)
Answer» E.
Discussion
2.

For a high frequency response of a simple C.E. stage with a transconductance of gm, what is Cin?

A. Cµ(1 + gm*R2) – Cπ
B. Cµ(1 + gm*R2) + Cπ
C. Cµ(1 – 2*gm*R2) + Cπ
D. Cµ(1 + 2*gm*R2) – Cπ
Answer» C. Cµ(1 – 2*gm*R2) + Cπ
Discussion
3.

If a C.E. stage with early effect has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the output side, gets multiplied?

A. 1 + 2/gm*(Rl || ro)
B. 1 – 1/gm*(Rl || ro)
C. 1 + 1/gm*(Rl || ro)
D. 1 – 2/gm*(Rl || ro)
Answer» D. 1 – 2/gm*(Rl || ro)
Discussion
4.

If the total capacitance between the base and the emitter increases by a factor of 2, the transit frequency __________

A. reduces by 2
B. increases by 2
C. reduces by 4
D. increases by 4
Answer» B. increases by 2
Discussion
5.

If the transconductance of the B.J.T increases, the transit frequency ______

A. Increases
B. Decreases
C. Doesn’t get affected
D. Doubles
Answer» B. Decreases
Discussion
6.

Which parasitic capacitors don’t affect the frequency response of the C.C. stage of the B.J.T.?

A. Ccs
B. Ccs and Cb
C. Cb
D. Ccs and Cµ
Answer» B. Ccs and Cb
Discussion
7.

Which parasitic capacitors don’t affect the frequency response of the C.B. stage of the B.J.T.?

A. None of the parasitic capacitances
B. All the parasitic capacitances
C. Some of the coupling capacitors
D. Ccs and Cb
Answer» C. Some of the coupling capacitors
Discussion
8.

Which parasitic capacitors are present at the collector terminal of the B.J.T.?

A. Cje and Cb
B. Ccs and Cµ
C. Cb
D. Ccs and Cb
Answer» C. Cb
Discussion