Explore topic-wise MCQs in Analog Circuits.

This section includes 10 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. C<sub>cs</sub> C<sub> </sub>*(2 + 1/g<sub>m</sub>*R<sub>2</sub>)
B. C<sub>cs</sub> + C<sub> </sub>*(1 + 2/g<sub>m</sub>*R<sub>2</sub>)
C. C<sub>cs</sub> C<sub> </sub>*(1 + 1/g<sub>m</sub>*R<sub>2</sub>)
D. C<sub>cs</sub> + C<sub> </sub>*(1 + 1/g<sub>m</sub>*R<sub>2</sub>)
Answer» E.
Discussion
2.

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

A. C<sub> </sub>(1 + g<sub>m</sub>*R<sub>2</sub>) C<sub> </sub>
B. C<sub> </sub>(1 + g<sub>m</sub>*R<sub>2</sub>) + C<sub> </sub>
C. C<sub> </sub>(1 2*<sub>gm</sub>*R<sub>2</sub>) + C<sub> </sub>
D. C<sub> </sub>(1 + 2*<sub>gm</sub>*R<sub>2</sub>) C<sub> </sub>
Answer» C. C<sub> </sub>(1 2*<sub>gm</sub>*R<sub>2</sub>) + C<sub> </sub>
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/g<sub>m</sub>*(R<sub>l</sub> || ro)
B. 1 1/g<sub>m</sub>*(R<sub>l</sub> || ro)
C. 1 + 1/g<sub>m</sub>*(R<sub>l</sub> || ro)
D. 1 2/g<sub>m</sub>*(R<sub>l</sub> || ro)
Answer» D. 1 2/g<sub>m</sub>*(R<sub>l</sub> || ro)
Discussion
4.

If a C.E. stage 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 + 1/g<sub>m</sub>R<sub>l</sub>
B. 1 1/g<sub>m</sub>R<sub>l</sub>
C. 1 + 2/g<sub>m</sub>R<sub>l</sub>
D. 1 2/g<sub>m</sub>R<sub>l</sub>
Answer» B. 1 1/g<sub>m</sub>R<sub>l</sub>
Discussion
5.

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

A. 1 + g<sub>m</sub>R<sub>l</sub>
B. 1 g<sub>m</sub>R<sub>l</sub>
C. 1 + 2*g<sub>m</sub>R<sub>l</sub>
D. 1 2*g<sub>m</sub>R<sub>l</sub>
Answer» B. 1 g<sub>m</sub>R<sub>l</sub>
Discussion
6.

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
7.

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
8.

Which parasitic capacitors don t affect the frequency response of the C.C. stage of the B.J.T.?

A. C<sub>cs</sub>
B. C<sub>cs</sub> and C<sub>b </sub>
C. C<sub>b</sub>
D. C<sub>cs</sub> and C<sub> </sub>
Answer» B. C<sub>cs</sub> and C<sub>b </sub>
Discussion
9.

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. C<sub>cs</sub> and C<sub>b</sub>
Answer» C. Some of the coupling capacitors
Discussion
10.

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

A. C<sub>je</sub> and C<sub>b</sub>
B. C<sub>cs</sub> and C<sub> </sub>
C. C<sub>b</sub>
D. C<sub>cs</sub> and C<sub>b</sub>
Answer» C. C<sub>b</sub>
Discussion