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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)
How is the frequency response of an ideal differentiator related to the frequency?
[A]
Inversely proportional
[B]
Linearly proportional
[C]
Quadratic
[D]
None of the mentioned
Answer: Linearly proportional
(2)
Which of the following is the frequency response of an ideal differentiator, Hd(ω)?
[A]
-jω ; -π ≤ ω ≤ π
[B]
-jω ; 0 ≤ ω ≤ π
[C]
jω ; 0 ≤ ω ≤ π
[D]
jω ; -π ≤ ω ≤ π
(3)
The ideal differentiator ahs which of the following unit sample response?
[A]
Symmetric
[B]
Anti-symmetric
[C]
Cannot be explained
[D]
None of the mentioned
(4)
If hd(n) is the unit sample response of an ideal differentiator, then what is the value of hd(0)?
[A]
1
[B]
-1
[C]
0
[D]
0.5
(5)
In this section, we confine our attention to FIR designs in which h(n)=-h(M-1-n).
(6)
Which of the following is the condition that an differentiator should satisfy?
[A]
Infinite response at zero frequency
[B]
Finite response at zero frequency
[C]
Negative response at zero frequency
[D]
Zero response at zero frequency
Answer: Zero response at zero frequency
(7)
Full band differentiators can be achieved with an FIR filters having odd number of coefficients.
(8)
If fp is the bandwidth of the differentiator, then the desired frequency characteristic should be linear in the range of _____________
[A]
0 ≤ ω ≤ 2π
[B]
0 ≤ ω ≤ 2fp
[C]
0 ≤ ω ≤ 2πfp
[D]
None of the mentioned
(9)
What is the desired response of the differentiator in the frequency range 2πfp ≤ ω ≤ π?
[A]
Left unconstrained
[B]
Constrained to be zero
[C]
Left unconstrained or Constrained to be zero
[D]
None of the mentioned
Answer: Left unconstrained or Constrained to be zero
(10)
What is the weighting function used in the design of FIR differentiators based on the chebyshev approximation criterion?
[A]
1/ω
[B]
ω
[C]
1+ω
[D]
1-ω
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