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Signal Classification MCQs

Practice Signal Classification MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Signals & SystemsSignal Classification

A signal x(t) is odd if it satisfies?

  • Ax(-t)=x(t)
  • Bx(-t)=-x(t)
  • Cx(t)=1 for all t
  • Dx(t)=x(t-1)
Report an error
Correct Answer: B. x(-t)=-x(t)
Explanation: An odd signal has origin symmetry and obeys x(-t)=-x(t).
Reference: Standard signals and systems: signal classification
Question 3
Signals & SystemsSignal Classification

The odd part of a signal x(t) is?

  • A[x(t)+x(-t)]/2
  • B[x(t)-x(-t)]/2
  • Cx(-t) only
  • Dx(t)/2 only
Report an error
Correct Answer: B. [x(t)-x(-t)]/2
Explanation: The odd component is xo(t)=1/2[x(t)-x(-t)].
Reference: Standard signals and systems: signal classification
Question 4
Signals & SystemsSignal Classification

A signal x(t) is even if it satisfies?

  • Ax(-t)=x(t)
  • Bx(-t)=-x(t)
  • Cx(t+T)=0
  • Dx(t)=delta(t) only
Report an error
Correct Answer: A. x(-t)=x(t)
Explanation: An even signal is symmetric about the vertical axis and obeys x(-t)=x(t).
Reference: Standard signals and systems: signal classification