Which of the following is false with respect to Pulse modulation?(a) Depends only on the frequency of the modulating signal(b) Phase of the carrier wave changes with respect to the modulating signal(c) Less affected by noise(d) Used to digitally transmit analog dataI had been asked this question in a national level competition.My question is from Frequency, Phase Modulation, Modulation Index and Sidebands in division Amplitude & Frequency Modulation of Avionics

Which of the following is false with respect to Pulse modulation?(a) D

1.	Which of the following is false with respect to Pulse modulation?(a) Depends only on the frequency of the modulating signal(b) Phase of the carrier wave changes with respect to the modulating signal(c) Less affected by noise(d) Used to digitally transmit analog dataI had been asked this question in a national level competition.My question is from Frequency, Phase Modulation, Modulation Index and Sidebands in division Amplitude & Frequency Modulation of Avionics
Answer» Correct answer is (a) Depends only on the FREQUENCY of the MODULATING signal The BEST I can explain: Phase modulation depends on both the amplitude and frequency of the modulating signal. Higher amplitude CAUSES a greater phase shift and higher frequency causes a greater rate of change of phase in the carrier signal.

Discussion

No Comment Found

Related InterviewSolutions

Which of the following pairs of resistors and capacitors can be used in high pass filters for preemphasis circuits?(a) 100Ω and 0.075μF(b) 100Ω and 0.75μF(c) 150Ω and 0.75μF(d) 16Ω and 0.75μFThis question was posed to me during an interview.I need to ask this question from Noise Suppression Effects of FM topic in portion Amplitude & Frequency Modulation of Avionics
What is the technique in which the high frequency components are amplified more than the low frequency components in FM?(a) Garble(b) Preemphasis(c) Detoriation(d) Selective amplificationThis question was addressed to me in my homework.I'd like to ask this question from Noise Suppression Effects of FM topic in portion Amplitude & Frequency Modulation of Avionics
What is the signal to noise ratio if the maximum allowable frequency deviation is 4kHz and the frequency deviation by noise is 156.42Hz?(a) 0.0364(b) 0.0391(c) 25.75(d) 20.45This question was posed to me in semester exam.The question is from Noise Suppression Effects of FM in division Amplitude & Frequency Modulation of Avionics
What is the ratio of the shift produced by the noise to the maximum allowed deviation if the modulating frequency is 300Hz and the phase shift by noise is 25° and the maximum allowable deviation is 5kHz?(a) 1.3(b) 0.530(c) 0.153(d) 0.0261This question was addressed to me at a job interview.This question is from Noise Suppression Effects of FM in section Amplitude & Frequency Modulation of Avionics
Calculate the phase difference by noise if the Signal to noise ratio is 7:2.(a) 15.366°(b) 17.5°(c) 13.65°(d) 8.21°This question was posed to me in exam.Question is from Noise Suppression Effects of FM topic in portion Amplitude & Frequency Modulation of Avionics
What is the frequency deviation produced by noise if the modulating frequency is 400Hz and the phase difference introduced by noise is 0.43rad?(a) 124Hz(b) 163Hz(c) 172Hz(d) 200HzThe question was posed to me during a job interview.This is a very interesting question from Noise Suppression Effects of FM in portion Amplitude & Frequency Modulation of Avionics
What is the noise to signal ratio if the phase shift introduced by noise is 0.75°?(a) 0.5(b) 0.966(c) 0.25(d) 1.75This question was addressed to me in an online quiz.I'd like to ask this question from Noise Suppression Effects of FM in division Amplitude & Frequency Modulation of Avionics
What is the frequency deviation produced by noise if the signal to noise ratio is 3:1 and modulating frequency is 800Hz?(a) 152.32Hz(b) 482.5Hz(c) 132.8Hz(d) 271.HzI have been asked this question during an interview.My question comes from Noise Suppression Effects of FM in portion Amplitude & Frequency Modulation of Avionics
Noise introduces a frequency variation into the signal.(a) True(b) FalseThe question was asked in quiz.This interesting question is from Noise Suppression Effects of FM topic in section Amplitude & Frequency Modulation of Avionics
Which circuit in FM receivers cancels or filters out noise?(a) Filter circuits(b) Anti-noise circuits(c) Limiter circuits(d) delimiter circuitsThis question was posed to me in examination.I'm obligated to ask this question of Noise Suppression Effects of FM in division Amplitude & Frequency Modulation of Avionics

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment