Question 1 : In differential encoding the _________ different between two wave forms is measured.
1. Magnitude
2. Frequency
3. Phase
4. Time period
View Answer   Discuss with Members

Question 2 : The detection method where carrier's phase is given importance is called as
1. Coherent detection
2. Non coherent detection
3. Coherent detection & Non coherent detection
4. None of the mentioned
View Answer   Discuss with Members

Question 3 : Antipodal signal sets are those vectors that can be illustrated as
1. Two 180 opposing vector
2. Two 90 opposing vector
3. Two 360 opposing vector
4. None of the mentioned
View Answer   Discuss with Members

Question 4 : In differential PSK the date is
1. Encoded differentially
2. Decoded differentially
3. Encoded & Decoded differentially
4. None of the mentioned
View Answer   Discuss with Members

Question 5 : In amplitude phase keying each phase vector is separated by
1. 90
2. 0
3. 45
4. 180
View Answer   Discuss with Members

Question 6 : The error performance of MPSK ______ as M or k increases.
1. Increases
2. Decreases
3. Stays constant
4. None of the mentioned
View Answer   Discuss with Members

Question 7 : For FSK signalling, WT is equal to
1. 0
2. 1
3. 0.737
4. Infinity
View Answer   Discuss with Members

Question 8 : In MPSK adding new signals _______ make it vulnerable to noise and in MFSK _______ make it vulnerable.
1. Does, does not
2. Does not, does
3. Does, does
4. Does not, does not
View Answer   Discuss with Members

Question 9 : Envelope detector consists of
1. Rectifier and high pass filter
2. Rectifier and low pass filter
3. Amplifier and low pass filter
4. Amplifier and high pass filter
View Answer   Discuss with Members

Question 10 : The transformation of the waveform into a single point in signal space is called as
1. Vector point
2. Predetection point
3. Preamplification point
4. Transformation point
View Answer   Discuss with Members