Explore topic-wise MCQs in Linear Integrated Circuit.

This section includes 11 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.

AT_WHAT_FREQUENCY,_THE_PHASE_SHIFT_BETWEEN_INPUT_&OUTPUT_VOLTAGE_WILL_BE_ZERO??$

A. -40Hz
B. 0Hz
C. -22Hz
D. 20Hz
Answer» C. -22Hz
Discussion
2.

What happen when the frequency increases?$

A. A<sub>OL</sub>(f) continues to drop
B. A increases
C. f<sub>o</sub> –> 0Hz
D. None of the mentioned
Answer» B. A increases
Discussion
3.

At_what_frequency_AOL(f)=A?$

A. 50Hz
B. 10Hz
C. 5Hz
D. 0Hz
Answer» E.
Discussion
4.

What_will_be_the_absolute_value_of_phase_shift,_if_the_frequency_keeps_increasing?

A. Increase towards 45<sup>o</sup>
B. Decrease towards 45<sup>o</sup>
C. Increase towards 90<sup>o</sup>
D. Decrease towards 90<sup>o</sup>
Answer» D. Decrease towards 90<sup>o</sup>
Discussion
5.

Determine the difference between two AOL(f) at 50Hz and 500Hz frequency? (Consider the op-amp to be 741c?

A. 40dB
B. 30dB
C. 20dB
D. 10dB
Answer» D. 10dB
Discussion
6.

Express the open loop gain of the op-amp in complex form?

A. A/‚àö [1+(f/f<sub>o</sub>)<sup>2</sup>
B. 20log{A/‚àö[1+(f/f<sub>o</sub>)<sup>2</sup>}
C. A/[1+j(f/f<sub>o</sub>)].
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
7.

Consider an op-amp where the inverting input voltage =3.7mv, non-inverting input voltage=6.25mv and open loop voltage gain =142dB. Find the output voltage.

A. 0.21v
B. 0.45v
C. 0.78v
D. 0.36v
Answer» E.
Discussion
8.

Find the gain magnitude and phase angle of the op-amp using the specifications:

A.
B. A<sub>OL</sub>(f)= 22.92dB , Φ(f) = – 89.99<sup>o</sup>
C. A<sub>OL</sub>(f)= 66dB , Φ(f) = – 90<sup>o</sup>
Answer» B. A<sub>OL</sub>(f)= 22.92dB , ‚âà√≠¬¨‚àÇ(f) = ‚Äö√Ñ√∂‚àö√ë‚àö¬® 89.99<sup>o</sup>
Discussion
9.

Which among the following factor remain fixed for an op-amp?

A. Open loop voltage gain
B. Gain of the op-amp
C. Operating frequency
D. Break frequency of the op-amp
Answer» E.
Discussion
10.

The open loop voltage gain as a function of frequency is defined as

A. A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>in</sub>
B. A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>id</sub>
C. A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>f</sub>
D. All of the mentioned
Answer» C. A<sub>OL</sub>(f) = V<sub>O</sub>/V<sub>f</sub>
Discussion
11.

Compute the break frequency of an op-amp, if the output resistance=10kΩ and capacitor connected to the output =0.1µF.$

A. 159.2Hz
B. 6.28Hz
C. 318.4Hz
D. 1000Hz
Answer» B. 6.28Hz
Discussion