Digital Signal Processing Questions and Answers, Set 14

Digital Signal Processing Questions and Answers

Q1. 

The divide-and-conquer approach is based on the decomposition of an N-point DFT into successively smaller DFTs. This basic approach leads to FFT algorithms.

Answer : 

True

Q2. 

In the Bilinear Transformation mapping, which of the following are correct?

Answer :  

All points in the LHP & RHP of s are mapped inside & outside the unit circle in the z-plane

Q3. 

Which of the following is the disadvantage of sampling rate conversion by converting the signal into an analog signal?

Answer : 

Signal distortion & Quantization effects

Q4. 

If E=255 and M≠0, then which of the following statements is true about X?

Answer :  

Not a number

Q5. 

The state space or the internal description of the system still involves a relationship between the input and output signals. What additional set of variables does it also involve?

Answer :  

State variables

Q6. 

A closed-form solution of the state space equations is easily obtained when the system matrix F is?

Answer :  

Diagonal

Q7. 

In direct form-I realization, the all-pole system is placed before the all-zero system.

Answer :  

False

Q8. 

If we reverse the directions of all branch transmittances and interchange the input and output in the flow graph, then the resulting structure is called as _____

Answer : 

Transposed form

Q9. 

The realization of the FIR filter by frequency sampling can be viewed as a cascade of how many filters?

Answer :  

Two

Q10. 

The number of times a fetch from memory is performed per output sample is one of the factors used in the implementation of the system.

Answer :  

True

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