

InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
51. |
If the system is initially relaxed at time n=0 and memory equals to zero, then the response of such state is called as ____________(a) Zero-state response(b) Zero-input response(c) Zero-condition response(d) None of the mentionedI got this question by my school teacher while I was bunking the class.This intriguing question originated from Discrete Time Systems Described by Difference Equations topic in portion Discrete Time Signals and Systems of Digital Signal Processing |
Answer» CORRECT choice is (a) Zero-state RESPONSE The EXPLANATION is: The memory of the system, describes, in some case, the ‘state’ of the system, the OUTPUT of the system is CALLED as ‘zero-state response’. |
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52. |
The solution obtained by assuming the input x(n) of the system is zero is ____________(a) General solution(b) Particular solution(c) Complete solution(d) Homogenous solutionThe question was asked by my college director while I was bunking the class.I need to ask this question from Discrete Time Systems Described by Difference Equations in division Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Right choice is (d) Homogenous solution |
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53. |
Zero-state response is also known as ____________(a) Free response(b) Forced response(c) Natural response(d) None of the mentionedThe question was asked in an interview for job.The question is from Discrete Time Systems Described by Difference Equations topic in division Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Right choice is (B) FORCED response |
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54. |
Zero-input response is also known as Natural or Free response.(a) True(b) FalseI got this question in an international level competition.This is a very interesting question from Discrete Time Systems Described by Difference Equations in chapter Discrete Time Signals and Systems of Digital Signal Processing |
Answer» RIGHT option is (a) True The best EXPLANATION: For a zero-input response, the input is zero and the output of the system is INDEPENDENT of the input of the system. So, the response if such system is also known as Natural or FREE response. |
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55. |
The system described by the equation y(n)=ay(n+1)+b x(n) is a recursive system.(a) True(b) FalseThis question was addressed to me in an online quiz.Question is from Implementation of Discrete Time Systems topic in chapter Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Right choice is (b) False |
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56. |
Which of the following is a recursive form of a non-recursive system described by the equation y(n)=\(\frac{1}{M+1} \sum_{k=0}^Mx(n-k)\)?(a) y(n)=y(n-1)+\(\frac{1}{M+1}\)[x(n)+x(n-1-M)](b) y(n)=y(n-1)+\(\frac{1}{M+1}\)[x(n)+x(n-1+M)](c) y(n)=y(n-1)+\(\frac{1}{M+1}\)[x(n)-x(n-1+M)](d) y(n)=y(n-1)+\(\frac{1}{M+1}\)[x(n)-x(n-1-M)]This question was posed to me in an international level competition.This interesting question is from Implementation of Discrete Time Systems topic in division Discrete Time Signals and Systems of Digital Signal Processing |
Answer» The correct OPTION is (d) y(N)=y(n-1)+\(\frac{1}{M+1}\)[x(n)-x(n-1-M)] |
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57. |
An FIR system is also called as “recursive system”.(a) True(b) FalseI got this question in an interview for job.My question is from Implementation of Discrete Time Systems topic in section Discrete Time Signals and Systems of Digital Signal Processing |
Answer» The correct choice is (B) False |
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58. |
What is the form of the FIR system to compute the moving average of the signal x(n)?(a) y(n)=\(\frac{1}{M+1} \sum_{k=0}^M x(n-k)\)(b) y(n)=\(\frac{1}{M+1} \sum_{k=0}^M x(n+k)\)(c) y(n)=\(\frac{1}{M+1} \sum_{k=0}^{\infty} x(n-k)\)(d) None of the mentionedI got this question by my college professor while I was bunking the class.This interesting question is from Implementation of Discrete Time Systems topic in portion Discrete Time Signals and Systems of Digital Signal Processing |
Answer» The correct answer is (a) y(N)=\(\frac{1}{M+1} \sum_{k=0}^M x(n-k)\) |
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59. |
The system represented by the following direct form structure is:(a) General second order system(b) Purely recursive system(c) Partial recursive system(d) FIR systemThe question was asked during an online interview.The origin of the question is Implementation of Discrete Time Systems in section Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Right choice is (d) FIR system |
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60. |
Which of the following linear time invariant system is a purely recursive system?(a) y(n) = \(-\sum_{k=1}^{N} a_k y(n-k)+\sum_{k=0}^{M} b_k x(n-k)\)(b) y(n) = \(\sum_{k=1}^{N} a_k y(n-k)+\sum_{k=0}^{M} b_k x(n-k)\)(c) y(n) = \(-\sum_{k=1}^{N} a_k y(n-k)-\sum_{k=0}^{M} b_k x(n-k)\)(d) y(n) = \(-\sum_{k=1}^{N} a_k y(n-k)+b_0x(n)\)I had been asked this question in an online quiz.My question comes from Implementation of Discrete Time Systems topic in division Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Correct answer is (d) y(n) = \(-\sum_{k=1}^{N} a_k y(n-k)+b_0x(n)\) |
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61. |
Which of the following is the difference equation of a special case ofFIR system?(a) y(n) = \(\sum_{k=0}^{M} b_k x(n-k)\)(b) y(n) = \(a_0y(n)-\sum_{k=1}^{N} a_k y(n-k)\)(c) y(n) = \(-\sum_{k=1}^{N} a_k y(n-k)\)(d) None of the mentionedI have been asked this question during an interview.My doubt is from Implementation of Discrete Time Systems in chapter Discrete Time Signals and Systems of Digital Signal Processing |
Answer» CORRECT choice is (a) y(n) = \(\sum_{k=0}^{M} b_k x(n-k)\) The BEST explanation: If the coefficients of the past values of the output in the difference EQUATION of the SYSTEM, then the system is said to be FIR system. |
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62. |
The system described by the equation y(n)=ay(n-1)+b x(n) is a recursive system.(a) True(b) FalseThe question was asked by my college professor while I was bunking the class.This is a very interesting question from Implementation of Discrete Time Systems in section Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Correct answer is (a) True |
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63. |
To implement the linear time invariant recursive system described by the difference equation y(n)=\(-\sum_{k=1}^N a_k y(n-k)+\sum_{k=0}^M b_k x(n-k)\) in Direct form-I, how many number of delay elements and multipliers are required respectively?(a) M+N+1, M+N(b) M+N-1, M+N(c) M+N, M+N+1(d) None of the mentionedI had been asked this question in an interview for job.My question is from Implementation of Discrete Time Systems in portion Discrete Time Signals and Systems of Digital Signal Processing |
Answer» Right answer is (c) M+N, M+N+1 |
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