Question 41 : FSK reception is
1. Phase Coherent
2. Phase non coherent
3. Phase Coherent & non coherent
4. None of the mentioned
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Question 42 : FSK reception uses
1. Correlation receiver
2. PLL
3. Correlation receiver & PLL
4. None of the mentioned
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Question 43 : Matched filter is a _____ technique.
1. Modulation
2. Demodulation
3. Modulation & Demodulation
4. None of the mentioned
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Question 44 : QAM uses ______ as the dimensions.
1. In phase
2. Quadrature
3. In phase & Quadrature
4. None of the mentioned
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Question 45 : Delta modulation is ______ conversion.
1. Analog to digital
2. Digital to analog
3. Analog to digital and digital to analog
4. None of the mentioned
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Question 46 : Time division multiplexing uses
1. High pass filter
2. Commutator
3. High pass filter & Commutator
4. None of the mentioned
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Question 47 : Which modulation technique have the same bit and symbol error probability?
1. BPSK
2. DPSK
3. OOK
4. All of the mentioned
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Question 48 : Modulation process corresponds to ______ the amplitude, frequency or phase.
1. Switching
2. Keying
3. Switching or keying
4. None of the mentioned
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Question 49 : In time division system, the actual switch is called as
1. Speech memory
2. Cross point
3. Connecting point
4. None of the mentioned
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Question 50 : Operations performed by switching system
1. Path establishment
2. Information exchange
3. Tariff computation
4. All of the mentioned
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