Question 21 : When two networks are connected in series, its composite noise figure can be given as
1. F1+(F2-1)/G1
2. F1-(F2-1)/G1
3. F2+(F1-1)/G1
4. F1G1+(F2-1)
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Question 22 : Which parameter is referred to as receiver sensitivity?
1. S/N ratio
2. G/T ratio
3. EIRP
4. PR/N0
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Question 23 : Hybrid automatic repeat request is a combination of
1. ARQ and error correction code
2. ARQ and error detection code
3. Error detection and correction codes
4. One of the mentioned
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Question 24 : Which factor adds phase noise to the signal?
1. Jitter
2. Phase fluctuations
3. Jitter & Phase fluctuations
4. None of the mentioned
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Question 25 : Noise figure is a parameter that represents a ______ of the system.
1. Noisiness
2. Efficiency
3. Maximum output
4. Maximum power handling capacity
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Question 26 : Link budget can help in predicting
1. Equipment weight and size
2. Technical risk
3. Prime power requirements
4. All of the mentioned
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Question 27 : Error detection is realized using
1. Hash function
2. Check sum
3. Hash function & Check sum
4. None of the mentioned
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Question 28 : According to reciprocity theorem, _____ and _____ are identical.
1. Transmitting power and receiving power
2. Transmitting gain and receiving gain
3. Effective area and physical area
4. None of the mentioned
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Question 29 : Which is the primary cost for degradation of error performance?
1. Loss in signal to noise ratio
2. Signal distortion
3. Signal distortion & Loss in signal to noise ratio
4. None of the mentioned
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Question 30 : AM-to-AM conversion brings about
1. Amplitude variation
2. Phase variation
3. Frequency variation
4. None of the mentioned
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