Step size varies according to the values … c. After The entire process involves v = log 2 N stages of decimation, where each stage involves N/2 butterflies of the type shown in Figure TC.3.7. b. δ(n) = 1, n = 0 Decimation is a term that historically means the removal of every tenth one. 29.Which of the following window is used in the design of a low pass filter to have a a) Decrease with increase in M satisfy to have a linear phase? b) False Here are a few tips on how to solve multiple-choice questions. c. Both convert analog signal to digital signal d) None of the mentioned filter. signal into analog signal? Zero gain in stop band d. Demodulator, 2)   The speech signal is obtained after, a. Analog to digital conversion 2) Removal of noise d. The poles lie in right half of the s plane, ANSWER: (c) The poles lie in left half of the s plane, 27)   IIR filter design by approximation of derivatives has the limitations, 1) Used only for transforming analog high pass filters c) 12π/M d. Split and combine algorithm, 1) DFT decimation interpolation Resampling by rational fractions Multirate identities Polyphase representations Maximally decimated filter banks aliasing amplitude and phase distortion perfect reconstruction conditions Digital Signal Processing – p.2/25 This list is mainly about Multiple Choice Questions (MCQs) on DC Machines. d. All of the above. a) 0 c. Both a and b b) Quantization effects Commerce provides you all type of quantitative and competitive aptitude mcq questions with easy and logical explanations. d) - d) None of the mentioned c. 1 and 3 are correct Digital to analog conversion signal into analog signal? The zeros lie in left half of the s plane b. Analog signals a) True following relation is true? 4) Gives the spectrum of the signal, a. 31.What is the approximate transition width of main lobe of a Blackman window? b. 4) Over all transfer function may be determined, a. MCQs. c) Kaiser window a) h(M-1-n) n=0,1,2...M- 4) Derivatives of the transfer functions, 32)   The advantage of using the cascade form of realisation is, 1) It has same number of poles and zeros as that of individual components d. Pick-down node. a) Before. d) - d. Both convert digital signal to analog signal, ANSWER: (b) Both convert discrete time domain to frequency spectrum domain, a. range of z for which the z transform converges Decimation in Frequency algorithm (DIF). d. Small and large samples, 16)   The computational procedure for Decimation in frequency algorithm takes, a. Log2 N stages 2) Realisation after fraction 11. Question 26. Consequently, the computation of the N-point DFT via the decimation-in-frequency FFT requires ( N /2)log 2 N complex multiplications and N log 2 N complex additions, just as in the decimation-in-time algorithm. 4) Amplitude modulated wave, 8)   The discrete impulse function is defined by, a. δ(n) = 1, n ≥ 0 Electronics and Communication Engineering Questions and Answers. 3) The number of zeros is the product of poles of individual components b. Multiplier d. Unpredictable. 2) High pass filters a) True 15.Which process has a block diagram as shown in the figure below? Q10. b. At the time of occur in complex conjugate pairs. c) None of the mentioned I am an M.Tech in Electronics & Telecommunication Engineering. a) zM+1.H(z-1)=±H(z) 29)   In direct form for realisation of IIR filters, 1) Denominator coefficients are the multipliers in the feed forward paths c. 2 and 3 are correct 2) The number of poles is the product of poles of individual components 1, 2 and 3 are correct duration characteristics of the filter. 22)   The anti causal sequences have ______ components in the left hand sequences. b) Hanning window Multi-rate processing and sample rate conversion, or interpolation and decimation as they re known, are a clever digital signal processing (DSP) techniques that broadband and wireless design engineers can employ during the system design process. b) At the time of. 24.What is the approximate transition width of main lobe of a Hamming window? b. 2) Quantization Positive b) False. c. Upper higher and lower spectrum 3) Low pass filters Interpolation is the process of increasing the sample rate in dsp whereas decimation is the opposite of this that is, it is the process of decreasing the sample rate in dsp. This set of multiple-choice questions – MCQ on data mining includes collections of MCQ questions on fundamentals of data mining techniques. These short solved questions or quizzes are provided by Gkseries. 37) Decimation is a process in which the sampling rate is _____. Questions and answers - MCQ with explanation on Computer Science subjects like System Architecture, Introduction to Management, Math For Computer Science, DBMS, C Programming, System Analysis and Design, Data Structure and Algorithm Analysis, OOP and Java, Client Server Application Development, Data Communication and Computer Networks, OS, MIS, Software Engineering, AI, Web Technology and … 3) Direct Z transform c. Linear Phase Response Marketing management is _____. frequency response as shown in the figure? phenomenon. c. Log2 N2 stages d. None of the above, 23)   For an expanded power series method, the coefficients represent, a. Inverse sequence values MCQ on Management Information System. d) 2π/M The gist of these two algorithms is that we break up the signal in either time and frequency domains and calculate the DFTs for each and then add the results up. 38) Anti-imaging filter with cut-off frequency ω c = π/ I is specifically used _____ upsampling process for the removal of unwanted images. 13.What is the folding frequency for the aliased version of x(n) with sampling rate F? a) Hamming window 14.Which of the following defines the rectangular window function of length M-1? c. reduced rectangular window becomes broader. d. Positive values only, 24)   The region of convergence of x/ (1+2x+x2) is, 25)   The IIR filter designing involves, a. b) w(n)=1, n=0,1,2...M- a) F/D b. b) False, The roots of the equation H(z) must occur in, If the unit sample response h(n) of the filter is real, complex valued roots need not 4) Used for band pass filters having high resonant frequencies, 28)   The filter that may not be realized by approximation of derivatives techniques are, 1) Band pass filters At ElectronicsPost.com I pursue my love for teaching. a) True Low Irrespective of the format of the question, test takers should concentrate on multiple choice questions a lot. a) True To practice multiple choice questions in all areas of Digital Signal Processing, here is complete set of 1000+ Multiple Choice Questions and Answers. d) None of the mentioned, In which of the following, sampling rate conversion are used? These short objective type questions with answers are very important for Board exams as well as competitive exams. symmetric? = 0, n ≥ 1, ANSWER: (b) δ(n) = 1, n = 0 c. range of frequency for which the signal gets transmitted What is the process of reducing the sampling rate by a factor D? We have ν1 radix-2 decimation in time stages. 3) Partial fraction expansion with table lookup 4) Multipliers in the feedback paths are the negatives of the denominator coefficients, a. a) Sampling rate conversion d) (M+1)/2 when M is odd and M/2 when M is even b) False, Which of the following methods are used in sampling rate conversion of a digital signal? d. All the four are correct. d) None of the mentioned ANSWER:(c) reduced. Anti-imaging filter with cut-off frequency ω c = π/ I is specifically used _____ upsampling process for the removal of unwanted images. b. Data Address Generators (DAGs) d) (M+1)/2 when M is odd and M/2 when M is even is the value of Fy/Fx? b) False, What is the value of h(M-1/2) if the unit sample response is anti-symmetric? What is the process of converting a signal from a given rate to a different rate? a) Sampling b) Differentiating c) Integrating d) None of the mentioned 11. c. 1, 2 and 4 are correct c) Ringing effects d. Periodic continuous signals, ANSWER:(b)  Aperiodic Discrete time signals, 10)   The transforming relations performed by DTFT are, 1) Linearity d. All the four are correct, 30)   The direct form II for realisation involves, 1) The realisation of transfer function into two parts d) F/2D 1, 2 and 3 are correct PERIOD 4 REVIEW: 1450 - 1750 C.E. c. Modulator 12.What is the process of increasing the sampling rate by a factor I? b) I/D b) - b) False, Which of the following condition should the unit sample response of a FIR filter What is the number of filter coefficients that specify the frequency response for h(n) b) Interpolation The Digital Signal Processing Notes Notes Pdf – DSP Pdf Notes book starts with the topics covering Introduction to Digital Signal Processing, DFS representation of periodic sequences, Applications of Z transforms, Characteristics of FIR Digital Filters, Down sampling,Decimation, Etc. • a clinical examination, testing clinical and communication skills, of three to four hours duration, which is administered on a single afternoon or morning. 23.The width of each side lobes decreases with an decrease in M. 1 and 3 are correct b) 1. a) - b) 8π/M d) None of the mentioned 2) A time series which is a domain of integers a. Adder 4) Band reject filters, a. Abdul Kalam Technical University, c) Sub band coding & Trans-multiplexer c. Ability to convert into discrete signal b. Divide and rule algorithm a) D/A convertor and A/D convertor 10.What is the number of filter coefficients that specify the frequency response for h(n) d) None of the mentioned b) Broadening effects c) Quadrature mirror filters B. Clarification of anti-aliasing / anti-imaging filter requirements. a. c) Decimation a) y(n)=∑M+ 1 k= 0 bkx(n+k) Q9.- What is interpolation and decimation? d) None of the mentioned b. Ability to translate into frequency domain b) 8π/M a) Less signal distortion C. Designing of filter at each stage. a. enhanced b. stable c. reduced d. unpredictable. a) (M-1)/2 when M is odd and M/2 when M is even Constant gain in passband b. A/D converter Ans9. b) Hanning window Join our social networks below and stay updated with latest contests, videos, internships and jobs! a) w(n)=1, n=0,1,2...M- a. Positive and negative values 3) Easier operations 14. c) 12π/M = 0, n ≠ 1 c) - 1 and 2 are correct 1 and 3 are correct 4) Direct inversion, a. 3. capture and reproduce the knowledge of … c) After. What is the process of converting a signal from a given rate to a different rate? b. d) z-(M-1).H(z-1)=±H(z), The roots of the polynomial H(z) are identical to the roots of the polynomial H(z-1). MCQ 15.27 If all frequencies of classes are same, the value of Chi-square is: (a) Zero (b) One (c) Infinite (d) All of the above MCQ 15.28 In order to carry out a χ2-test on data in a contingency table, the observed values in the table should be: (a) Close to the expected values (b) All greater than or equal to 5 b) Normalizing The number of such sequences is 2ν1. The zeros lie in right half of the s plane 0 5 10 15 20-1-0.5 0 0.5 1 n x(n) (a)The 23-point DFT of x(n) is computed. d) 2π/M = 0, n ≠ 1, a. = 0, n ≠ 1 That's because we can combine the interpolation filter LPFM and the decimation filter LPFD into a single filter, shown as LPFM/D in Figure 10-7(b). 2) Helps in quantization c) New sampling rate can be arbitrarily selected a) True Participate in the Sanfoundry Certification contest to get free Certificate of Merit. 2) Used for band pass filters having smaller resonant frequencies 2) IDFT d. Log2 N/2 stages, 17)   The transformations are required for, 1) Analysis in time or frequency domain Take the Quiz and improve your overall General Knowledge. c. 1 and 4 are correct 33.The large side lobes of W(ω) results in which of the following undesirable effects? 2Log2 N stages b. c) Kaiser window MULTIPLE CHOICE QUESTIONS 1. b) Trans-multiplexer, Which of the following is the difference equation of the FIR filter of length M, input b) Increase with increase in M 2 and 4 are correct The Chapters of Multiple Choice Questions (MCQs) on DC Machines. c) z(M-1).H(z-1)=±H(z) 30.Which of the following window is used in the design of a low pass filter to have a The process in Figure 10-7(b) is normally called a sample rate converter because if M > D, we have interpolation, and when D > M, we have decimation. c. Impulse signals 4) Quantization of signal, 12)   Frequency selectivity characteristics of DFT refers to, a. b. d) D/A convertor, A/D convertor & Performing entirely in digital domain, Which of the following is the advantage of sampling rate conversion by converting the 1, 2 and 3 are correct This is done in such a way that the rounded off number is as close to the original unquantized number as possible. b) F/2D d. All the four are correct, 31)   The cascade realisation of IIR systems involves, 1) The transfer function broken into product of transfer functions 2) Long division c) Remains constant with increase in M c. Barrel Shifter c. 3 and 4 are correct Periodic Discrete time signals b. 2) The transfer function divided into addition of transfer functions b. d. unpredictable. McQ is a 1974 American neo-noir action crime film directed by John Sturges, starring John Wayne filmed in Panavision.The film made extensive use of Seattle locations.
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