Electronic Engineering MCQ Question Papers: ENTC, IT Interview Placement

Subject: Digital Signal Processing 2

**Part 2: List for questions and answers of Digital Signal Processing**

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**Q1. The nonlinear difference equations are solved using**

**a) Iterative method**

**b) Cobweb model**

**c) Phase diagram**

**d) Power series method**

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**Q2. The error in the filter output that results from rounding or truncating calculations within ****the filter is called**

**a) Coefficient quantization error**

**b) Adder overflow limit cycle**

**c) Round off noise**

**d) Limit cycles**

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**Q3. Consider the assertions given below. Which among them is an advantage of FIR Filter?**

**a) Necessity of computational techniques for filter implementation**

**b) Requirement of large storage**

**c) Incapability of simulating prototype analog filters**

**d) Presence of linear phase response**

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**Q4. For a linear phase filter, if Z1 is zero then what would be the value of Z1-1 or 1/ Z1?**

**a) Zero**

**b) Unity**

**c) Infinity**

**d) Unpredictable**

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**Q5. In FIR filter design, which among the following parameters is/are separately controlled ****by using Kaiser window?**

**a) Order of filter (M)**

**b) Transition width of main lobe**

**c) Both a and b**

**d) None of the above**

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**Q6. A system is said to be marginally unstable if**

**a) None of its zeros of its transfer function lies on the jω axis of s-plane**

**b) At least one zero of its transfer function lies on the jω axis of s-plane**

**c) None of its poles of its transfer function lies on the jω axis of s-plane**

**d) At least one pole of its transfer function lies on the jω axis of s-plane **

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**Q7. A system is said to be unstable if**

**a) None of the poles of its transfer function is shifted to the right half of s-plane**

**b) At least one zero of its transfer function is shifted to the right half of s-plane**

**c) At least one pole of its transfer function is shifted to the right half of s-plane**

**d) At least one pole of its transfer function is shifted to the left half of s-plane**

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**Q8. Discrete cosine transforms (DCTs) express a function or a signal in terms of**

**a) Sum of cosine functions oscillating at different frequencies**

**b) Sum of cosine functions oscillating at same frequencies**

**c) Sum of cosine functions at different sampling intervals**

**d) Sum of cosine functions oscillating at same sampling intervals**

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**Q9. In Overlap-Add Method with linear convolution of a discrete-time signal of length L and ****a discrete-time signal of length M, for a length N, zero padding should be of length**

**a) L, M is greater than N**

**b) L, M = N**

**c) L, M is less than N**

**d) L, M is less than N2**

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**Q10. DFT is applied to**

**a) Infinite sequences**

**b) Finite discrete sequences**

**c) Continuous infinite signals**

**d) Continuous finite sequences**

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**Q11. The scaling of a sequence x[n] by a factor ****a **** is given by**

**a) y[n] = **** a**** [x[n]]2**

**b) y[n] = **** a**** x[n2]**

**c) y[n] = **** a****x[n]**

**d) y[n] = x[n]x[-n]**

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**Q12. Superposition of signals in a linear system refers to the**

**a) Output that is product of all the signals**

**b) Output that is sum of all the signals**

**c) Output that is of highest amplitude of all the signals**

**d) Output that is of largest spectrum of all the signals **

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**Q13. One dimensional signal is a function of**

**a) Multiple independent variables**

**b) Single independent variable**

**c) Multiple dependent variables**

**d) Single dependent variable**

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**Q14. Two vectors a, b are orthogonal if**

**a) (a,b) = 0**

**b) (a,b) = (a,b)**

**c) (a,b) = 1**

**d) (a,b) = – (a,b)**

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**Q15. In DAGs, which register/s provide/s increment or step size for index register especially ****during the register move?**

**a) Index Register**

**b) Length & Base Register**

**c) Modify Register**

**d) All of the above**

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**Q16. Which address/es is/are generated by Program Sequences?**

**a) Data Address**

**b) Instruction Address**

**c) c. Both a and b**

**d) None of the above**

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**Q17. To change the sampling rate for better efficiency in two or multiple stages, The ****decimation and interpolation factors must be _________unity**

**a) Less than**

**b) Equal to**

**c) Greater than**

**d) None of the above**

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**Q18. In direct form realization for an interpolator, which among the following generates an ****intermediate signal?**

**a) Upsampler**

**b) Downsampler**

**c) Anti-imaging filter**

**d) Anti-aliasing filter **

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**Q19. Which is/are the correct way/s for the result quantization of an arithmetic operation?**

**a) Result Truncation**

**b) Result Rounding**

**c) Both a and b**

**d) None of the above**

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**Q20. Which among the following has/have a provision to support an adaptive filtering ****mechanism?**

**a) IIR**

**b) FIR**

**c) Both a and b**

**d) None of the above **

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**Part 2: List for questions and answers of Digital Signal Processing**

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**Q1. Answer: c**

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**Q2. Answer: c**

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**Q3. Answer: d**

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**Q4. Answer: a**

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**Q5. Answer: c**

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**Q6. Answer: b**

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**Q7. Answer: c**

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**Q8. Answer: a**

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**Q9. Answer: c**

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**Q10. Answer: b**

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**Q11. Answer: c**

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**Q12. Answer: b**

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**Q13. Answer: d**

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**Q14. Answer: a**

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**Q15. Answer: c**

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**Q16. Answer: b**

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**Q17. Answer: c**

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**Q18. Answer: a**

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**Q19. Answer: c**

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**Q20. Answer: c**