Related InterviewSolutions

• Which of the following requires a synchronizing signal?(a) Single channel PPM system(b) PAM(c) DM(d) All of the mentionedThe question was posed to me during an online interview.Enquiry is from PAM,PWM and TDM in section Modulation and Coding Trade-off of Digital Communications
• The use of non uniform quantization leads to(a) Reduction in transmission bandwidth(b) Increase in maximum SNR(c) Increase in SNR for low level signals(d) Simplification of quantization processThe question was asked in final exam.This intriguing question originated from PAM,PWM and TDM in section Modulation and Coding Trade-off of Digital Communications
• QAM uses ______ as the dimensions.(a) In phase(b) Quadrature(c) In phase & Quadrature(d) None of the mentionedI have been asked this question during an online exam.The question is from Modulation Techniques topic in division Modulation and Coding Trade-off of Digital Communications
• Which system uses QAM?(a) Digital microwave relay(b) Dial up modem(c) Digital microwave relay & Dial up modem(d) None of the mentionedI got this question in an online quiz.Origin of the question is Modulation Techniques topic in portion Modulation and Coding Trade-off of Digital Communications
• Which is called as on-off keying?(a) Amplitude shift keying(b) Uni-polar PAM(c) Amplitude shift keying & Uni-polar PAM(d) None of the mentionedThe question was posed to me in examination.This intriguing question comes from Modulation Techniques in portion Modulation and Coding Trade-off of Digital Communications
• Simulation is used to determine(a) Bit error rate(b) Symbol error rate(c) Bit error(d) Symbol errorThe question was asked in class test.Question is taken from Modulation Techniques topic in portion Modulation and Coding Trade-off of Digital Communications
• If we correlate the received signal with both orthogonal function the inner product will be(a) In phase(b) Quadrature(c) In phase and quadrature(d) UnityThe question was asked in an internship interview.I need to ask this question from Modulation Techniques in chapter Modulation and Coding Trade-off of Digital Communications
• Matched filter is a _____ technique.(a) Modulation(b) Demodulation(c) Modulation & Demodulation(d) None of the mentionedI have been asked this question during an online exam.This question is from Modulation Techniques topic in portion Modulation and Coding Trade-off of Digital Communications
• Every frequency has ____ orthogonal functions.(a) One(b) Two(c) Four(d) SixI have been asked this question during an online interview.My question comes from Modulation Techniques topic in chapter Modulation and Coding Trade-off of Digital Communications
• If we correlate the received signal with any one of the two orthogonal function, the obtained inner product will be(a) In phase(b) Quadrature(c) Zero(d) Cannot be determinedThis question was posed to me in an interview for job.This question is from Modulation Techniques in division Modulation and Coding Trade-off of Digital Communications