Explore topic-wise MCQs in Electronic Devices and Circuits Questions and Answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Consider the DAC (digital to Analog Converter) shown below. Where b1, b2….bn can be either 0 or 1. For vref = 10V, n = 6, and R= 5000 ohm, which of the following is true?

A. The maximum value of the output current is 1.9375 mA
B. The change in the output current if the LSB is changed from 0 to 1 is 0.03125 mA
C. The change in the output current is the MSB is change from 0 to 1 is 0.5 mA
D. None of the mentioned
Answer» C. The change in the output current is the MSB is change from 0 to 1 is 0.5 mA
Discussion
2.

Consider the DAC (digital to Analog Converter) shown below. Where b1, b2….bn can be either 0 or 1. Which is the Most Significant Bit and Least Significant Bit in this case?

A. MSB: bN, LSB: bN
B. MSB: bN, LSB: b1
C. MSB: b1, LSB: bN
D. MSB: b1, LSB: b1
Answer» C. MSB: b1, LSB: bN
Discussion
3.

Consider the DAC (digital to Analog Converter) shown below. Where b1, b2….bn can be either 0 or 1. What will be the value of the output current io, if the digital signal is in the form of b1b2b3…bn.

A. Vref/2R (b1/2+ b2/4 + b3/8….+bn/(2N))
B. 2Vref/R (b1/2+ b2/4 + b3/8….+bn/(2N))
C. Vref/R (b1/2+ b2/4 + b3/8….+bn/(2N))
D. none of the above
Answer» D. none of the above
Discussion