Complete GATE ECE 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 19–21 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 7 of 22

Question 19

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ECMCQ1 markNeeds review
For a MOS capacitor,

and

are the flat-band voltage and the threshold voltage, respectively. The variation of the depletion width (

) for varying gate voltage (

) is best represented by
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Question 20

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ECMCQ1 markNeeds review
Consider a narrow band signal, propagating in a lossless dielectric medium (

), with phase velocity

and group velocity

. Which of the following statement is true? (

is the velocity of light in vacuum.)
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Question 21

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ECMCQ1 markNeeds review
In the circuit shown below,

and

are bias voltages. Based on input and output impedances, the circuit behaves as a
Diagram for Electronics and Communication Engineering question 21

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