Related InterviewSolutions

• In QAM, the amplitude is _______ and phase is _______(a) Varied, constant(b) Varied, varied(c) Constant, varied(d) Constant, constantI got this question in an online quiz.My query is from Combined Linear and Constant Envelope Modulation Techniques in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
• The number of possible signal in M-ary signalling is given by M and M = __________ where n is an integer.(a) n(b) 2n(c) 2^n(d) n^2This question was addressed to me in examination.Question is taken from Combined Linear and Constant Envelope Modulation Techniques topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
• Gaussian pulse shaping filter reduces the spectral occupancy and ISI.(a) True(b) FalseThis question was addressed to me in quiz.My question is taken from Pulse Shaping Techniques in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
• As the roll off factor in raised cosine rolloff filter __________ the occupied bandwidth ________(a) Increases, decreases(b) Decreases, constant(c) Increases, increases(d) Decreases, increasesI have been asked this question during an online interview.I need to ask this question from Pulse Shaping Techniques in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
• Intersymbol interference (ISI) leads to ________ probability of the receiver for making an error in detecting the symbols.(a) Increased(b) Decreased(c) Zero(d) OneThe question was asked in an online interview.My query is from Pulse Shaping Techniques topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
• Which of the following are two methods for generating FM signal?(a) Coherent method, noncoherent method(b) Product detector, envelope detector(c) Direct method, indirect method(d) Slope detector, Zero crossing detectorThe question was asked by my school teacher while I was bunking the class.The question is from Angle modulation in division Modulation Techniques for Mobile Radio of Wireless/Mobile
• AM demodulation technique can be divided into _____ and _____ demodulation.(a) Direct, indirect(b) Slope detector, zero crossing(c) Coherent, noncoherent(d) Quadrature detection, coherent detectionI got this question in examination.I need to ask this question from Amplitude Modulation in section Modulation Techniques for Mobile Radio of Wireless/Mobile
• In angle modulation, signal to noise ratio before detection is a function of ______(a) Modulation index(b) Input signal to noise ratio(c) Maximum frequency of the message(d) IF filter bandwidthI have been asked this question in a job interview.Query is from Angle modulation topic in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile
• A product detector in AM systems is also called ___________(a) Envelope detector(b) Differentiator(c) Integrator(d) Phase detectorThis question was posed to me by my school principal while I was bunking the class.The doubt is from Amplitude Modulation topic in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
• PN sequence can be generated using sequential logic circuits.(a) True(b) FalseThis question was posed to me in an online quiz.This interesting question is from Spread Spectrum Modulation Techniques in division Modulation Techniques for Mobile Radio of Wireless/Mobile