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Free download in PDF Digital Signal Processing Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Which of the following is common independent variable for speech signal, EEG and ECG?
[A]
Time
[B]
Spatial coordinates
[C]
Pressure
[D]
None of the mentioned
(2)
Which of the following conditions made digital signal processing more advantageous over analog signal processing?
[A]
Flexibility
[B]
Accuracy
[C]
Storage
[D]
All of the mentioned
Answer: All of the mentioned
(3)
Which property does y(t)=x(1-t) exhibit?
[A]
Time scaling
[B]
Time shifting
[C]
Reflecting
[D]
Time shifting and reflecting
Answer: Time shifting and reflecting
(4)
If x(n)=(0,1,2,3,3,0,0,0) then x(2n) is?
[A]
(0,2,4,6,6,0,0,0)
[B]
(0,1,2,3,3,0,0,0)
[C]
(0,2,3,0,0,0,0,0)
[D]
None of the mentioned
Answer: (0,2,3,0,0,0,0,0)
(5)
If x(n)=(0,0,1,2,3,4,0,0) then x(n-2) is?
[A]
(0,0,2,4,6,8,0,0)
[B]
(0,0,1,2,3,4,0,0)
[C]
(1,2,3,4,0,0,0,0)
[D]
(0,0,0,0,1,2,3,4)
Answer: (0,0,0,0,1,2,3,4)
(6)
If x(n)=(0,0,1,1,1,1,1,0) then x(3n+1) is?
[A]
(0,1,0,0,0,0,0,0)
[B]
(0,0,1,1,1,1,0,0)
[C]
(1,1,0,0,0,0,0,0)
[D]
None of the mentioned
Answer: (0,1,0,0,0,0,0,0)
(7)
If a signal x(t) is processed through a system to obtain the signal (x(t)2), then the system is said to be ____________
[A]
Linear
[B]
Non-linear
[C]
Exponential
[D]
None of the mentioned
(8)
What are the important block(s) required to process an input analog signal to get an output analog signal?
[A]
A/D converter
[B]
Digital signal processor
[C]
D/A converter
[D]
All of the mentioned
Answer: All of the mentioned
(9)
Which of the following block is not required in digital processing of a RADAR signal?
[A]
A/D converter
[B]
D/A converter
[C]
DSP
[D]
All of the mentioned
(10)
Which of the following wave is known as “amplitude modulated wave” of x(t)?
[A]
C.x(t) (where C is a constant)
[B]
x(t)+y(t)
[C]
x(t).y(t)
[D]
dx(t)/dt
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