Digital Signal Processing (DSP) MCQs

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1. Which of the following is NOT a characteristic of digital signals compared to analog signals?





2. The process of converting a continuous signal into a discrete signal is known as:





3. Nyquist sampling theorem states that to avoid aliasing, the sampling rate should be:





4. The number of bits used to represent each sample in a digital signal affects:





5. The process of converting a digital signal back into an analog signal is called:





6. In the context of digital filters, FIR stands for:





7. Which of the following filters is non-recursive?





8. The Z-transform is used in DSP to:





9. A signal has a sampling rate of 8000 Hz. What is its Nyquist frequency?





10. Which of the following techniques is used to reduce quantization errors in analog-to-digital conversion?





11. The Discrete Fourier Transform (DFT) is used to convert:





12. Which window function is commonly used in FIR filter design to minimize the side lobes in the frequency domain?





13. The impulse response of a system can be found by taking the ________ of its transfer function.





14. Which of the following statements about digital signal processing is true?





15. A system that does not change its characteristics over time is known as:





16. Which of the following is a common application of DSP?





17. The process of converting an analog signal into a digital signal is called:





18. Which of the following is NOT a type of digital filter?





19. The primary advantage of digital filters over analog filters is:





20. The main drawback of FIR filters compared to IIR filters is:





21. In digital signal processing, decimation refers to:





22. A DSP system with a quantization step size of 2 volts has how many quantization levels?





23. Which of the following is used to reduce the computational complexity of the FFT algorithm?





24. A digital signal has a maximum frequency component of 2000 Hz. What should be the minimum sampling rate to avoid aliasing?





25. Which of the following is an advantage of using the Hamming window in FIR filter design?





26. Quantization error in analog-to-digital conversion can be reduced by:





27. The process of shifting a signal in the time domain is equivalent to:





28. The primary difference between FIR and IIR filters is:





29. The process of recovering the original signal from its quantized version is called:





30. Which of the following is a limitation of the discrete Fourier transform (DFT) compared to the continuous Fourier transform (CTFT)?





31. The process of extracting specific frequency bands from a signal is known as:





32. The phase response of a digital filter describes:





33. Which of the following is a drawback of using a high-order FIR filter?





34. In DSP terminology, the process of finding the time-domain output of a system given its impulse response and input signal is called:





35. Which of the following statements about the FFT algorithm is true?





36. A signal with a bandwidth of 4 kHz is sampled at 10 kHz. To avoid aliasing, what is the maximum allowable bandwidth of the input signal?





37. Which of the following is NOT a common window function used in FIR filter design?





38. The main purpose of zero-padding in FFT computation is to:





39. The process of converting a digital signal into an analog signal is called:





40. Which of the following is a characteristic of a causal system?





41. In DSP, the process of interpolating between samples of a signal is called:





42. Which of the following is NOT a type of digital modulation technique?





43. A DSP system with a sampling rate of 20 kHz is used to process a signal with a maximum frequency component of 10 kHz. To avoid aliasing, what should be done?





44. Which of the following statements about FIR filters is true?





45. The process of combining two signals to create a new signal is known as:





46. Which of the following transforms is commonly used to analyze signals in the frequency domain?





47. Which of the following statements about the amplitude resolution of a digital signal is true?





48. The process of removing high-frequency components from a signal is called:





49. Which of the following statements about the phase response of a digital filter is true?





50. Which of the following is an advantage of using the Chebyshev filter over other types of filters?





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