Explore topic-wise MCQs in Linear Integrated Circuit.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Linear Integrated Circuit knowledge and support exam preparation. Choose a topic below to get started.

1.

WHAT_MUST_BE_THE_VALUE_OF_EXTERNAL_COMPONENTS_USED_IN_VOLTAGE_SERIES_FEEDBACK_AMPLIFIER??$

A. Less than 1MΩ
B. Less than 10MΩ
C. Less than 100MΩ
D. Less than 0.1MΩ
Answer» B. Less than 10M‚âà√≠¬¨¬©
Discussion
2.

Define the input resistance with feedback for voltage series feedback amplifier?$

A. R<sub>IF</sub> = (1-AB)
B. R<sub>IF</sub> = (AB-1)
C. R<sub>IF</sub> = (1+AB)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
3.

When the non-inverting input terminal of an op-amp is equal to that of the inverting input terminal (ideally)

A. a–>∞
B. V<sub>id</sub> ‚âÖ 0
C. A<sub>F</sub> = 1+( R<sub>F</sub> / R<sub>1</sub>)
D. All of the mentioned
Answer» E.
Discussion
4.

For the feedback circuit of voltage series feedback amplifier, find the feedback voltage for the specifications: R1=1kΩ, RF = 10kΩ and Vo= 25v?#

A. 12.5v
B. 22v
C. 0.9v
D. 2.3v
Answer» E.
Discussion
5.

Which factor determines the gain of the voltage series feedback amplifier?

A. Open loop voltage gain
B. Feedback voltage
C. Ratio of two resistors
D. Gain of feedback circuit
Answer» D. Gain of feedback circuit
Discussion
6.

Express closed loop voltage gain (AF) in terms of open loop gain (A) and feedback circuit gain (B)?

A. A<sub>F</sub> = A/AB
B. A<sub>F</sub> = 1+ (A/AB)
C. A<sub>F</sub> = A/(1+AB)
D. A<sub>F</sub> = AB/(1+A)
Answer» D. A<sub>F</sub> = AB/(1+A)
Discussion
7.

Why the feedback circuit is said to be negative for voltage series feedback amplifier?

A. Feedback voltage is 180<sup>o</sup> out of phase with respect to input voltage
B. Input voltage is 180<sup>o</sup> out of phase with respect to feedback voltage
C. Feedback voltage is in same phase with respect to input voltage
D. Input voltage is in same phase with respect to feedback voltage
Answer» B. Input voltage is 180<sup>o</sup> out of phase with respect to feedback voltage
Discussion
8.

How is the difference voltage calculated in closed loop non-inverting amplifier?

A. V<sub>id</sub>= V<sub>o</sub> – V<sub>f</sub>
B. V<sub>id</sub>= V<sub>in</sub> – V<sub>f</sub>
C. V<sub>id</sub>= V<sub>o</sub> – V<sub>in</sub>
D. V<sub>id</sub>= V<sub>f</sub> – V<sub>in</sub>
Answer» C. V<sub>id</sub>= V<sub>o</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® V<sub>in</sub>
Discussion
9.

If the feedback voltage and the output voltage are given as 10v and 4v. Find the gain of the feedback circuit in voltage-series feedback amplifier?

A. 2.5v
B. 40v
C. 3v
D. 6.2v
Answer» B. 40v
Discussion
10.

Specify the voltage gain of non-inverting amplifier with feedback amplifier with and without feedback?

A. A= V<sub>o</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>o</sub>
B. A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub>= V<sub>o</sub>/V<sub>f</sub>
C. A= V<sub>o</sub>/V<sub>id</sub>, A<sub>F</sub>= V<sub>o</sub>in
D. A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>in</sub>
Answer» D. A= V<sub>f</sub>/V<sub>id</sub>, A<sub>F</sub> = V<sub>f</sub>/V<sub>in</sub>
Discussion