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Digital Signal Processing Practice Test: Basic Signaling
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Avg score: 90% • Most missed: “Which of the following conditions made digital signal processing more advantageo…”
Basic Signaling topics include: A/D and D/A converters, signal classification and signal and system processing. Here are some basic signal processing operations in digital communication: Source coding: The encoder maps the digital signal generated at the source output into another signal in digital form. Channel coding: A basic signal processing operation. Modulation source coding: A basic signal processing operation.  Here are some other types of digital signals: Digital-logic, Analog, Signal-processing, Sampling, Quantization.  In digital communication systems, a modulator is a device... Show more
Digital Signal Processing Practice Test: Basic Signaling
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25 Questions

1. What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20Hz?
2. Which property does y(t)=x(1-t) exhibit?
3. Which of the following is a digital-to-analog conversion process?
4. Which of the following is the odd component of the signal x(t)=e(jt)?
5. For a continuous time signal x(t) to be periodic with a period T, then x(t+mT) should be equal to ___________
6. Let x1(t) and x2(t) be periodic signals with fundamental periods T1 and T2 respectively. Then the fundamental period of x(t)=x1(t)+x2(t) is?
7. What is the period of cos2t+sin3t?
8. Which of the following conditions made digital signal processing more advantageous over analog signal processing?
9. Which of the following should be done in order to convert a continuous-time signal to a discrete-time signal?
10. Which of the following is done to convert a continuous time signal into discrete time signal?
11. Which of the following is common independent variable for speech signal, EEG and ECG?
12. The quality of output signal from A/D converter is measured in terms of ___________
13. If x(n)=(0,0,1,1,1,1,1,0) then x(3n+1) is?
14. The even part of a signal x(t) is?
15. If ‘F’ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?
16. The relation between analog frequency ‘F’ and digital frequency ‘f’ is?
17. The difference between the unquantized x(n) and quantized xq(n) is known as ___________
18. If x(n)=(0,0,1,2,3,4,0,0) then x(n-2) is?
19. The process of converting discrete-time continuous valued signal into discrete-time discrete valued (digital) signal is known as ____________
20. What are the important block(s) required to process an input analog signal to get an output analog signal?
21. x(t) or x(n) is defined to be an energy signal, if and only if the total energy content of the signal is a ___________
22. Which bit coder is required to code a signal with 16 levels?
23. The deflection voltage of an oscilloscope is a ‘deterministic’ signal.
24. What is the physical device that performs an operation on the signal?
25. What is the nyquist rate of the signal x(t)=3cos(50*pi*t)+10sin(300*pi*t)-cos(100*pi*t)?

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