Question 51 : Cumulative distributive function is
1. Non negative
2. Non decreasing
3. Non negative & decreasing
4. None of the mentioned
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Question 52 : Pulse shaping is done by which block or system?
1. Encoder
2. Baseband modulator
3. Pulse code modulator
4. Demodulator
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Question 53 : Which has the same power spectral density?
1. White noise
2. Brown noise
3. White & Brown noise
4. None of the mentioned
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Question 54 : Which has minimum power loss during transmission?
1. Twisted Copper cable at 1KHz
2. Optical fiber
3. Twisted copper cable at 100KHz
4. Wave guide
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Question 55 : A random process is called as stationary in strict sense if
1. Its statistics vary with shift in time origin
2. Its statistics does not vary with shift in time origin
3. Its autocorrelation vary with shift in time
4. Its autocorrelation does not vary with shift in time
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Question 56 : Matched filtering operation includes
1. Spectral phase matching
2. Spectral amplitude matching
3. Spectral phase & amplitude matching
4. None of the mentioned
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Question 57 : In a communication system, a process in which statistical averages and time averages are equal is called as
1. Stationary
2. Ergodic
3. Gaussian
4. Poisson
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Question 58 : Analog information is converted to digital data using
1. Sampling
2. Quantization
3. Coding
4. All of the mentioned
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Question 59 : The line code has a zero dc component for pulse transmission of random binary data is
1. NRZ
2. RZ
3. Alternate mark inversion
4. None of the mentioned
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Question 60 : Thermal noise is a wide sense stationary process.
1. True
2. False
3.
4.
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