Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

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Questions
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

Answer:Time
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
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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

Answer:Non-linear
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

Answer:D/A converter
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

Answer:x(t).y(t)

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