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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)
In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system.
(2)
The term ‘bandwidth’ represents the quantitative measure of a signal.
(3)
What is the frequency range(in Hz) of Electroencephalogram(EEG)?
[A]
10-40
[B]
1000-2000
[C]
0-100
[D]
None of the mentioned
(4)
Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?
[A]
Radio broadcast
[B]
Shortwave radio signal
[C]
RADAR
[D]
Infrared signal
(5)
Which of the following relations are true if x(n) is real?
[A]
X(ω)=X(-ω)
[B]
X(ω)=-X(-ω)
[C]
X*(ω)=X(ω)
[D]
X*(ω)=X(-ω)
(6)
If X(ω) is the Fourier transform of the signal x(n), then what is the Fourier transform of the signal x(n-k)?
[A]
ejωk. X(-ω)
[B]
ejωk. X(ω)
[C]
e-jωk. X(-ω)
[D]
e-jωk. X(ω
(7)
What is the convolution of the sequences of x1(n)=x2(n)={1,1,1}?
[A]
{1,2,3,2,1}
[B]
{1,2,3,2,1}
[C]
{1,1,1,1,1}
[D]
{1,1,1,1,1}
(8)
If x(n)=Aejωn is the input of an LTI system and h(n) is the response of the system, then what is the output y(n) of the system?
[A]
H(-ω)x(n)
[B]
-H(ω)x(n)
[C]
H(ω)x(n)
[D]
None of the mentioned
(9)
If the system gives an output y(n)=H(ω)x(n) with x(n) = Aejωnas input signal, then x(n) is said to be Eigen function of the system.
(10)
If the Eigen function of an LTI system is x(n)= Aejnπ and the impulse response of the system is h(n)=(1/2)nu(n), then what is the Eigen value of the system?
[A]
3/2
[B]
-3/2
[C]
-2/3
[D]
2/3
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