DC Signal MCQ Quiz - Objective Question with Answer for DC Signal - Download Free PDF

Last updated on Apr 16, 2025

Latest DC Signal MCQ Objective Questions

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DC Signal Question 1:

The sinusoidal signal $x (t) = 3 \cos (200 t + \frac{π}{6})$ is passed through a square-law device defined by the input-output relation:

y(t) = 2x²(t)

The dc component of the signal y(t) is

3
3.5
9
9.5

Answer (Detailed Solution Below)

Option 3 : 9

y(t) = 2.x²(t)

$W i t h x (t) = 3 \cos (200 t + \frac{π}{6})$

$y (t) = 2 {[3 \cos (200 t + \frac{π}{6})]}^{2}$

$= 2 [9 \cos^{2} (200 t + \frac{π}{6})]$

$= \frac{18}{2} [1 + \cos 2 (200 t + \frac{π}{6})]$

$= \frac{18}{2} [1 + \cos (400 t + \frac{π}{3})]$

$= 9 + 9 \cos (400 t + \frac{π}{3})$

So, the DC component of y(t) = 9

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DC Signal MCQ Quiz - Objective Question with Answer for DC Signal - Download Free PDF

Latest DC Signal MCQ Objective Questions

Top DC Signal MCQ Objective Questions

DC Signal Question 1:

Answer (Detailed Solution Below)

DC Signal Question 1 Detailed Solution

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DC Signal MCQ Quiz - Objective Question with Answer for DC Signal - Download Free PDF

Latest DC Signal MCQ Objective Questions

Top DC Signal MCQ Objective Questions

DC Signal Question 1:

Answer (Detailed Solution Below)

DC Signal Question 1 Detailed Solution

Exam Preparation Simplified

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