# Effect of Various Capacitors on Frequency Response – 1 MCQ’s

This set of Analog Electronic Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Effect of Various Capacitors on Frequency Response – 1″.

1. During high frequency applications of a B.J.T., which parasitic capacitors arise between the collector and the emitter?

a) No capacitor arises

b) C_{cs}

c) C_{b}

d) C_{cs} and C_{b}

2. During high frequency applications of a B.J.T, which parasitic capacitors arise between the collector and the base?

a) C_{je} and C_{b}

b) C_{cs}

c) C_{π}

d) C_{µ}

3. During high frequency applications of a B.J.T., which parasitic capacitors arise between the base and the emitter?

a) C_{je} and C_{b}

b) C_{cs}

c) C_{b}

d) C_{cs} and C_{b}

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

a) C_{je} and C_{b}

b) C_{cs} and C_{µ}

c) C_{b}

d) C_{cs} and C_{b}

5. 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_{cs} and C_{b}

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

a) Increases

b) Decreases

c) Doesn’t get affected

d) Doubles

7. Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

a) C_{je} and C_{b}

b) C_{cs} and C_{µ}

c) C_{b} and C_{µ}

d) No parasitic capacitor gets deactivated

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

a) C_{cs}

b) C_{cs} and C_{b}

c) C_{b}

d) C_{cs} and C_{µ}

9. 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

10. If a C.E. stage with early effect has a load R_{l} and transconductance g_{m}, what is the factor by which the capacitance between the base and the collector at the output side, gets multiplied?

a) 1 + 2/g_{m}*(R_{l} || ro)

b) 1 – 1/g_{m}*(R_{l} || ro)

c) 1 + 1/g_{m}*(R_{l} || ro)

d) 1 – 2/g_{m}*(R_{l} || ro)

11. If a C.E. stage has a load R_{l} and transconductance g_{m}, what is the factor by which the capacitance between the base and the collector at the input side gets multiplied?

a) 1 + g_{m}R_{l}

b) 1 – g_{m}R_{l}

c) 1 + 2*g_{m}R_{l}

d) 1 – 2*g_{m}R_{l}

12. Which effect plays a critical role in producing changes in the frequency response of the B.J.T.?

a) Thevenin’s effect

b) Miller effect

c) Tellegen’s effect

d) Norton’s effect

13. If a C.E. stage has a load R_{l} and transconductance g_{m}, what is the factor by which the capacitance between the base and the collector at the output side gets multiplied?

a) 1 + 1/g_{m}R_{l}

b) 1 – 1/g_{m}R_{l}

c) 1 + 2/g_{m}R_{l}

d) 1 – 2/g_{m}R_{l}

14. For a high frequency response of a simple C.E. stage with a transconductance of g_{m}, what is C_{in}?

a) C_{µ}(1 + g_{m}*R_{2}) – C_{π}

b) C_{µ}(1 + g_{m}*R_{2}) + C_{π}

c) C_{µ}(1 – 2*_{gm}*R_{2}) + C_{π}

d) C_{µ}(1 + 2*_{gm}*R_{2}) – C_{π}

15. For a high frequency response of a simple C.E. stage with a transconductance of g_{m}, what is C_{out}?

a) C_{cs} – C_{µ}*(2 + 1/g_{m}*R_{2})

b) C_{cs} + C_{µ}*(1 + 2/g_{m}*R_{2})

c) C_{cs} – C_{µ}*(1 + 1/g_{m}*R_{2})

d) C_{cs} + C_{µ}*(1 + 1/g_{m}*R_{2})