Digital Signal Processing Questions and Answers | Digital Signal Processing MCQs

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 If we store the signal row wise and compute the L point DFT at each column, the resulting array must be multiplied by which of the following factors?
A WNlq
B WNpq
C WNlq
D WNpm

Answer:WNpm
2 If we split the N point data sequence into two N/2 point data sequences f1(n) and f2(n) corresponding to the even numbered and odd numbered samples of x(n), then such an FFT algorithm is known as decimation-in-time algorithm.
A True
B False

Answer:True
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
3 If we split the N point data sequence into two N/2 point data sequences f1(n) and f2(n) corresponding to the even numbered and odd numbered samples of x(n) and F1(k) and F2(k) are the N/2 point DFTs of f1(k) and f2(k) respectively, then what is the N/2 point DFT X(k) of x(n)?
A F1(k)+F2(k)
B F1(k)-WNk F2(k)
C F1(k)+WNk F2(k)
D None of the mentioned

Answer:F1(k)+WNk F2(k)
4 If X(k) is the N/2 point DFT of the sequence x(n), then what is the value of X(k+N/2)?
A F1(k)+F2(k)
B F1(k)-WNk F2(k)
C F1(k)+WNk F2(k)
D None of the mentioned

Answer:F1(k)-WNk F2(k)
5 How many complex multiplications are required to compute X(k)?
A N(N+1)
B N(N-1)/2
C N2/2
D N(N+1)/2

Answer:N(N+1)/2
6 The total number of complex multiplications required to compute N point DFT by radix-2 FFT is?
A (N/2)log2N
B Nlog2N
C (N/2)logN
D None of the mentioned

Answer:(N/2)log2N
7 The total number of complex additions required to compute N point DFT by radix-2 FFT is?
A (N/2)log2N
B Nlog2N
C (N/2)logN
D None of the mentioned

Answer:Nlog2N
8 The following butterfly diagram is used in the computation of __________

Digital Signal Processing

A Decimation-in-time FFT
B Decimation-in-frequency FFT
C All of the mentioned
D None of the mentioned

Answer:Decimation-in-time FFT
9 For a decimation-in-time FFT algorithm, which of the following is true?
A Both input and output are in order
B Both input and output are shuffled
C Input is shuffled and output is in order
D Input is in order and output is shuffled

Answer:Input is shuffled and output is in order
10 The following butterfly diagram is used in the computation of __________

Digital Signal Processing

A Decimation-in-time FFT
B Decimation-in-frequency FFT
C All of the mentioned
D None of the mentioned

Answer:Decimation-in-frequency FFT

Random GK Questions

Q. Leaving agricultural land uncultivated for some years known as
Q. Grants from the Centre to the States under the recommendations of Finance Commission are known as:
Q. The term gene was first used by
Q. The sharpness of a television image is termed as
Q. Which one of the following is a renewable source of energy ?
Q. The idea that hospitals should be very clean was suggested by:
Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series