Explore topic-wise MCQs in Analog Circuits.

This section includes 7 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.

An op-amp uses a level shifter internally to prevent the loading effect.

A. True
B. False
Answer» B. False
Discussion
2.

Consider the circuit shown. The input VI = 10sin2π106t. Calculate the duty cycle of the output.

A. 0.43
B. 0.065
C. 0.36
D. 0.5
Answer» D. 0.5
Discussion
3.

Given that the PSRR of an op-amp is 120dB. The supply lies between 12V to 15V. Calculate the change in the input offset voltage.

A. 3μV
B. ±3μV
C. ±3×10-12V
D. -3V
Answer» C. ±3×10-12V
Discussion
4.

What is incorrect regarding the output offset voltage of op-amp?

A. It is the output when the input voltage at both input pins of op-amp is zero
B. It occurs due to dissimilarities in the internal structure of the op-amp
C. The output offset voltage does not depend on the supply voltage
D. The output offset voltage can be in the units of Volts
Answer» D. The output offset voltage can be in the units of Volts
Discussion
5.

The current flowing into one input of the op-amp is 12nA and it is 10 nA in the other. Find the input offset current.

A. 1nA
B. 2nA
C. -2nA
D. 11nA
Answer» C. -2nA
Discussion
6.

Given an op-amp who’s gain is unknown but the output is saturated, which of the following is not possible?

A. No feedback is being applied
B. Negative feedback is applied while input is more than –VSat/AOL
C. Positive feedback is applied
D. Negative feedback is applied while the input is more than VSat/AOL
Answer» C. Positive feedback is applied
Discussion
7.

Consider a practical op-amp where the power supply is VCC = +12V and VEE = -12V. The open loop gain is 106 and open loop bandwidth is 5Hz. What is the maximum positive input before which the output is saturated?

A. 12 mV
B. 0.012 mV
C. 24 mV
D. 12V
Answer» C. 24 mV
Discussion