1) The modulation techniques used to convert analog signal into digital signal are
a. Pulse code modulation
b. Delta modulation
c. Adaptive delta modulation
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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2) Matched filters may be used
a. To estimate the frequency of the received signal
b. In parameter estimation problems
c. To estimate the distance of the object
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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3) Characteristics of Matched filter are
a. Matched filter is used to maximize Signal to noise ratio even for non Gaussian noise
b. It gives the output as signal energy in the absence of noise
c. They are used for signal detection
d. All of the above
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Answer
Explanation
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ANSWER: All of the above
Explanation:
No explanation is available for this question!
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4) Matched filter may be optimally used only for
a. Gaussian noise
b. Transit time noise
c. Flicker
d. All of the above
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Answer
Explanation
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ANSWER: Gaussian noise
Explanation:
No explanation is available for this question!
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5) T1 carrier system is used
a. For PCM voice transmission
b. For delta modulation
c. For frequency modulated signals
d. None of the above
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Answer
Explanation
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ANSWER: For PCM voice transmission
Explanation:
No explanation is available for this question!
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6) The maximum data transmission rate in T1 carrier system is
a. 2.6 megabits per second
b. 1000 megabits per second
c. 1.544 megabits per second
d. 5.6 megabits per second
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Answer
Explanation
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ANSWER: 1.544 megabits per second
Explanation:
No explanation is available for this question!
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7) The number of voice channels that can be accommodated for transmission in T1 carrier system is
a. 24
b. 32
c. 56
d. 64
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Answer
Explanation
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ANSWER: 24
Explanation:
No explanation is available for this question!
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8) In Adaptive Delta Modulation, the slope error reduces and
a. Quantization error decreases
b. Quantization error increases
c. Quantization error remains same
d. None of the above
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Answer
Explanation
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ANSWER: Quantization error increases
Explanation:
No explanation is available for this question!
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9) The digital modulation scheme in which the step size is not fixed is
a. Delta modulation
b. Adaptive delta modulation
c. DPCM
d. PCM
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Answer
Explanation
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ANSWER: Adaptive delta modulation
Explanation:
No explanation is available for this question!
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10) The digital modulation technique in which the step size is varied according to the variation in the slope of the input is called
a. Delta modulation
b. PCM
c. Adaptive delta modulation
d. PAM
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Answer
Explanation
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ANSWER: Adaptive delta modulation
Explanation:
No explanation is available for this question!
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