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Digital Signal Processing Practice Test: Basic Signaling
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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 the physical device that performs an operation on the signal?
2. The difference between the unquantized x(n) and quantized xq(n) is known as ___________
3. 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?
4. Let x1(t) and x2(t) be periodic signals with fundamental periods T1 and T2 respectively. Which of the following must be a rational number for x(t)=x1(t)+x2(t) to be periodic?
5. 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 ___________
6. For a continuous time signal x(t) to be periodic with a period T, then x(t+mT) should be equal to ___________
7. All energy signals will have an average power of ___________
8. If ‘F’ is the frequency of the analog signal, then what is the minimum sampling rate required to avoid aliasing?
9. If x(n)=(0,0,1,1,1,1,1,0) then x(3n+1) is?
10. The process of converting discrete-time continuous valued signal into discrete-time discrete valued (digital) signal is known as ____________
11. Which of the following is done to convert a continuous time signal into discrete time signal?
12. The deflection voltage of an oscilloscope is a ‘deterministic’ signal.
13. Which of the following block is not required in digital processing of a RADAR signal?
14. What is the period of cos2t+sin3t?
15. If x(n)=(0,0,1,2,3,4,0,0) then x(n-2) is?
16. What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20Hz?
17. Which of the following is the odd component of the signal x(t)=e(jt)?
18. Which of the following should be done in order to convert a continuous-time signal to a discrete-time signal?
19. If the sampling rate Fs satisfies the sampling theorem, then the relation between quantization errors of analog signal(eq(t)) and discrete-time signal(eq(n)) is?
20. The quality of output signal from A/D converter is measured in terms of ___________
21. The relation between analog frequency ‘F’ and digital frequency ‘f’ is?
22. Which of the following is common independent variable for speech signal, EEG and ECG?
23. Which of the following conditions made digital signal processing more advantageous over analog signal processing?
24. What are the important block(s) required to process an input analog signal to get an output analog signal?
25. Which of the following wave is known as “amplitude modulated wave” of x(t)?

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