Category: Signals & Systems

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Exponential Fourier Series and Fourier Transforms”. 1. Given, X (ejω) = (b−a)ejωe−j2ω−(a+b)ejω+ab, |b|<1<|a|The value of x[n] is __________a) bn u [n] + an u [n-1]b) bn u [n] – an u [-n-1]c) bn u [n] + an u [-n-1]d) bn u [n] – an u [n+1] 2. The input and […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Power and Energy Signals”. 1. The property of Fourier Transform which states that the compression in time domain is equivalent to the expansion in the frequency domain is ____________a) Dualityb) Scalingc) Time scalingd) Frequency shifting 2. The impulse response h[n] of […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Average Power and Energy of a Signal”. 1. The resultant signal obtained after frequency convolution along with constant multiplier 12πj of the signals whose Laplace transforms are given by, 1s+2 and 1s+1.a) e-2t + e-tb) e-2tc) e-3td) e-t 2. Given signal given, y(t)=2sin(23t)+4sin(14t–π4)+6sin(13t–π5)+8sin(12t–π7). The period of y(t) is […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Trigonometric Fourier Series”. 1. The Fourier series coefficient of time domain signal x (t) is X[k] = jδ[k-1] – jδ[k+1] + δ[k+3] + δ[k-3], the fundamental frequency of the signal is ω=2π. The signal is ___________a) 2(cos 3πt – sin πt)b) […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Gibb’s Phenomena, Convergence of Fourier Series”. 1. Where does the gibbs phenomenon occur?a) Gibbs phenomenon occurs near points of discontinuityb) Gibbs phenomenon occurs only near points of discontinuityc) Gibbs phenomenon occurs only ahead of points of discontinuityd) Gibbs phenomenon does not […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Dirichlet’s Conditions”. 1. What are the Dirichlet’s conditions?a) Conditions required for fourier series to divergeb) Conditions required for fourier series to converge if continuousc) Conditions required for fourier series to converged) Conditions required for fourier series to diverge if continuous 2. […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Symmetry Properties of the Fourier Series”. 1. What is the function of an even signal?a) x(t) = -x(t)b) x(t) = x(-t)c) x(t) = -x(-t)d) x(t) = x(t+1) 2. What is the function of an odd signal?a) x(t) = -x(t)b) x(t) = […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Fourier Series and LTI Systems”. 1. Which of the following is a causal system?a) y(n) = 3x(n) – 2x(n-1)b) y(n) = 3x(n) + 2x(n+1)c) y(n) = 3x(n+1) + 2x(n-1)d) y(n) = 3x(n+1) + 2x(n-1) + x(n) 2. Which of the following […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Fourier Series Properties – 2″. 1. What is the outcome of a periodic convolution of signals in case of continuous time fourier series?a) Division in frequency domainb) Multiplication in frequency domainc) Convolution is easierd) Addition of signals in frequency domain 2. […]

This set of Signals & Systems Multiple Choice Questions & Answers (MCQs) focuses on “Fourier Series Properties – 1″. 1. What are the properties of continuous time fourier series?a) Linearity, time shiftingb) Linearity, time shifting, frequency shiftingc) Linearity, time shifting, frequency shifting, time reversal, time scaling, periodic convolutiond) Linearity, time shifting, frequency shifting, time reversal, […]