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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 bit coder is required to code a signal with 16 levels?
[A]
8 bit
[B]
4 bit
[C]
2 bit
[D]
1 bit
(2)
Which of the following is done to convert a continuous time signal into discrete time signal?
[A]
Modulating
[B]
Sampling
[C]
Differentiating
[D]
Integrating
(3)
The deflection voltage of an oscilloscope is a ‘deterministic’ signal.
(4)
The even part of a signal x(t) is?
[A]
x(t)+x(-t)
[B]
x(t)-x(-t)
[C]
(1/2)*(x(t)+x(-t))
[D]
(1/2)*(x(t)-x(-t))
Answer: (1/2)*(x(t)+x(-t))
(5)
For a continuous time signal x(t) to be periodic with a period T, then x(t+mT) should be equal to ___________
[A]
x(-t)
[B]
x(mT)
[C]
x(mt)
[D]
x(t)
(6)
Let x1(t) and x2(t) be periodic signals with fundamental periods T1 and T2 respectively. Which of the following must be a rational number for x(t)=x1(t)+x2(t) to be periodic?
[A]
T1+T2
[B]
T1-T2
[C]
T1/T2
[D]
T1*T2
(7)
Let x1(t) and x2(t) be periodic signals with fundamental periods T1 and T2 respectively. Then the fundamental period of x(t)=x1(t)+x2(t) is?
[A]
LCM of T1 and T2
[B]
HCF of T1and T2
[C]
Product of T1 and T2
[D]
Ratio of T1 to T2
(8)
All energy signals will have an average power of ___________
[A]
Infinite
[B]
Zero
[C]
Positive
[D]
Cannot be calculated
(9)
x(t) or x(n) is defined to be an energy signal, if and only if the total energy content of the signal is a ___________
[A]
Finite quantity
[B]
Infinite
[C]
Zero
[D]
None of the mentioned
(10)
What is the period of cos2t+sin3t?
[A]
pi
[B]
2*pi
[C]
3*pi
[D]
4*pi
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