Explore topic-wise MCQs in Analog Circuits.

This section includes 6 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.

How is BJT used as a faster switch?

A. By operating it in the saturation and cut-off region
B. By operating it in the active and cut-off region
C. By using it in strong saturation
D. By decreasing its ON resistance
Answer» C. By using it in strong saturation
Discussion
2.

Which of these relations is true always for the BJT as a switch?

A. Off time >> On time
B. Off time = Storage time Rise time
C. Off time << On time
D. Off time = Storage time + Delay time
Answer» B. Off time = Storage time Rise time
Discussion
3.

What is the ON resistance of a transistor?

A. R<sub>ON</sub> = V<sub>CEsat</sub>/ I<sub>B</sub>
B. R<sub>ON</sub> = V<sub>CEsat</sub> + V<sub>A</sub>/I<sub>Csat</sub>
C. R<sub>ON</sub> = V<sub>CEsat</sub>/( +1)I<sub>B</sub>
D. R<sub>ON</sub> = V<sub>CEsat</sub>/I<sub>Csat</sub>
Answer» E.
Discussion
4.

Given that the BJT is completely saturated, what is the overdrive?

A. Overdrive = 1
B. Overdrive &lt; 1
C. Overdrive &gt; 1
D. Overdrive &gt; 0
Answer» D. Overdrive &gt; 0
Discussion
5.

For a transistor in saturation, which is true?

A. I<sub>C</sub> = I<sub>B</sub>
B. I<sub>C</sub> &gt; I<sub>B</sub>
C. I<sub>C</sub> &lt; I<sub>B</sub>
D. I<sub>C</sub> = ( +1)I<sub>B</sub>
Answer» D. I<sub>C</sub> = ( +1)I<sub>B</sub>
Discussion
6.

At saturation, which of these is not true for a BJT?

A. The collector current I<sub>C</sub> cannot increase further
B. The base current I<sub>B</sub>, cannot increase further
C. The collector-to-emitter voltage, V<sub>CE</sub> is due to the non-zero internal resistance of BJT
D. V<sub>CE</sub>(saturation) is the minimum voltage drop between C and E
Answer» C. The collector-to-emitter voltage, V<sub>CE</sub> is due to the non-zero internal resistance of BJT
Discussion