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Discrete-Time LTI MCQs

Practice Discrete-Time LTI MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Signals & SystemsDiscrete-Time LTI

Discrete-time convolution uses?

  • AA summation over an integer index
  • BOnly a continuous integral
  • CMatrix inversion always
  • DDifferentiation only
Report an error
Correct Answer: A. A summation over an integer index
Explanation: y[n]=sum x[k]h[n-k].
Reference: Standard signals and systems: discrete-time lti
Question 2
Signals & SystemsDiscrete-Time LTI

Discrete-time LTI BIBO stability requires?

  • ASum of |h[n]| over all n is finite
  • Bh[n]=n
  • Ch[n] periodic
  • Dh[0]=0
Report an error
Correct Answer: A. Sum of |h[n]| over all n is finite
Explanation: The impulse response must be absolutely summable.
Reference: Standard signals and systems: discrete-time lti