# Digital Signal Processing Quiz (2017-18)

21 Questions | Total Attempts: 181  Settings  • 1.
The DFT is preferred for1) Its ability to determine the frequency component of the signal2) Removal of noise3) Filter design4) Quantization of signal
• A.

A. 1, 2 and 3 are correct

• B.

B. 1 and 2 are correct

• C.

C. 1 and 3 are correct

• D.

D. All the four are correct

• 2.
FFT may be used to calculate1) DFT2) IDFT3) Direct Z transform4) In direct Z transform
• A.

1, 2 and 3 are correct

• B.

1 and 2 are correct

• C.

1 and 3 are correct

• D.

All the four are correct

• 3.
DIT algorithm divides the sequence into
• A.

Positive and negative values

• B.

Even and odd samples

• C.

Upper higher and lower spectrum

• D.

Small and large samples

• 4.
The computational procedure for Decimation in frequency algorithm takes
• A.

Log2 N stages

• B.

2Log2 N stages

• C.

Log2 N2 stages

• D.

Log2 N/2 stages

• 5.
The transformations are required for1) Analysis in time or frequency domain2) Quantization3) Easier operations4) Modulation
• A.

1, 2 and 3 are correct

• B.

1 and 2 are correct

• C.

1 and 3 are correct

• D.

All the four are correct

• 6.
The IIR filter designing involves
• A.

Designing of analog filter in analog domain and transforming into digital domain

• B.

Designing of digital filter in analog domain and transforming into digital domain

• C.

Designing of analog filter in digital domain and transforming into analog domain

• D.

Designing of digital filter in digital domain and transforming into analog domain

• 7.
DIT algorithm divides the sequence into
• A.

Positive and negative values

• B.

Even and odd samples

• C.

Upper higher and lower spectrum

• D.

Small and large samples

• 8.
The circular convolution of two sequences in time domain is equivalent  to
• A.

Multiplication of DFTs of two sequences

• B.

Summation of DFTs of two sequences

• C.

Difference of DFTs of two sequences

• D.

Square of multiplication of DFTs of two sequences

• 9.
The overlap save method is used to calculate
• A.

The discrete convolution between a sampled signal and a finite impulse response (FIR) filter

• B.

The discrete convolution between a sampled signal and an infinite impulse response (IIR) filter

• C.

The discrete convolution between a very long signal and a finite impulse response (FIR) filter

• D.

The discrete convolution between a very long signal and a infinite impulse response (IIR) filter

• 10.
WN is called as
• 11.
The property that supports W88 =W80 is
• 12.
Output length of the linear convolution is given by
• 13.
We can Design Digital Filters using Wrapping Technique
• A.

True

• B.

False

• 14.
Multiplication of two sequences in Fourier domain gives linear convolution output in time domain
• A.

True

• B.

False

• 15.
Chebhsev and butterworth filters gives same order for the same specifications in filter design
• A.

True

• B.

False

• 16.
64 point FFT contains 5 stages of computations
• A.

True

• B.

False

• 17.
Linear convolution output can be obtained using/applying circular convolution method
• A.

True

• B.

False

• 18.
Overlap save and overlap add methods requires same no of iteration blocks for computation for final output
• A.

True

• B.

False

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