Question 61 : Which requires interpolation filtering?
1. Up-sampler
2. D to A converter
3. Up-sampler & D to A converter
4. None of the mentioned
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Question 62 : The signal can be reconstructed
1. At Nyquist rate
2. Above Nyquist rate
3. At & above the Nyquist rate
4. None of the mentioned
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Question 63 : The sampling process includes methods such as
1. Filtering
2. Sample and hold
3. Amplifying
4. None of the mentioned
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Question 64 : Reconstruction filter is difficult to implement in hardware.
1. True
2. False
3.
4.
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Question 65 : In which waveform logic 1 is represented by equal amplitude alternating pulses?
1. Unipolar RZ
2. Bipolar RZ
3. RZ-AMI
4. Manchester coding
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Question 66 : Which filter does not have sharp output?
1. Linear phase filter
2. Delayed symmetric filter
3. Linear phase & Delayed symmetric filter
4. None of the mentioned
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Question 67 : In non uniform quantization, the quantization noise is _______ to signal size.
1. Inversely proportional
2. Directly proportional
3. Equal
4. Double
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Question 68 : Which type is used and preferred in digital logic circuits?
1. NRZ-L
2. NRZ-M
3. NRZ-S
4. None of the mentioned
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Question 69 : Non uniform quantization includes
1. Compression
2. Expansion
3. Compression & Expansion
4. None of the mentioned
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Question 70 : The fourier tranform of one impulse train is also another impulse train with a period of the output equal to the
1. Period of the input
2. Reciprocal of the period of input signal
3. Half the period of input
4. Twice the period of the input
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