Signals and Systems MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Signals and Systems, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Signals and Systems MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Signals and Systems mcq questions that explore various aspects of Signals and Systems problems. Each MCQ is crafted to challenge your understanding of Signals and Systems principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Signals and Systems MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Signals and Systems. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Signals and Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Signals and Systems MCQs | Page 7 of 48

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Q61.
The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 ฯ€t + 2 sin 700 ฯ€t, then folding frequency is

a.

500 Hz

b.

700 Hz

c.

300 Hz

d.

1400 Hz

Discuss
Answer: (c).300 Hz
Q62.
If H(f) = y(t)/x(t), then for this to be true x(t) is

a.

exp (j2ฯ€ f/t)

b.

exp (-j2ฯ€ f/t)

c.

exp (j2ฯ€ ft)

d.

exp (-j2ฯ€ f/t)

Discuss
Answer: (c).exp (j2ฯ€ ft)
Q63.
The analog signal m(t) is given below m(t) = 4 cos 100 ฯ€t + 8 sin 200 ฯ€t + cos 300 ฯ€t, the Nyquist sampling rate will be

a.

1/100

b.

1/200

c.

1/300

d.

1/600

Discuss
Answer: (c).1/300
Q64.
The ROC of sequence in the Z.T. of sequence x[n] = aโฟ โˆช [n] is

a.

z > a

b.

z < a

c.

|z| > a

d.

|z| < a

Discuss
Answer: (c).|z| > a
Q65.
In Laplace transform, multiplication by e^(-at) in time domain becomes

a.

translation by a in s domain

b.

translation by (-a) in s domain

c.

multiplication by e^(-as) in s domain

d.

none of the above

Discuss
Answer: (a).translation by a in s domain
Q66.
The F.T. of a conjugate symmetric function is always

a.

imaginary

b.

real

c.

conjugate Unsymmetric

d.

conjugate symmetric

Discuss
Answer: (b).real
Q67.
Which one is time invariant system?

a.

y[n] = x[2n]

b.

y[n] = x[n] x[n - 1]

c.

y[n] = x[n/2]

d.

all

Discuss
Answer: (b).y[n] = x[n] x[n - 1]
Q68.
The Fourier series representation of a periodic current (2 + 6โˆš2 cos ฯ‰t +โˆš48 sin 2ฯ‰t) A. The effective value is

a.

(2 + 6 + โˆš24) A

b.

8 A

c.

6 A

d.

2 A

Discuss
Answer: (b).8 A
Q69.
If X(z) = z+z¯³ / z+z¯¹, then x(n) series has

a.

alternates 0

b.

alternate 1

c.

alternate 2

d.

alternate -1s

Discuss
Answer: (a).alternates 0
Q70.
If f=0

a.

XL = 0 and XC = 0

b.

XL = โˆž, XC = โˆž

c.

XL = 0 and XC = โˆž

d.

XL = โˆž and XC = 0

Discuss
Answer: (c).XL = 0 and XC = โˆž
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