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ELECTRONICS AND COMMUNICATION ENGINEERING IMPORTANT MCQ-SIGNALS AND SYSTEMS - All Exam Review Adda
1) Which mathematical notation specifies the condition of periodicity for a continuous time signal? a. x(t) = x(t +T0) b. x(n) = x(n+ N) c. x(t) = e-αt d. None of the above ANSWER: x(t) = x(t +T0) 2) Which property of delta function indicates the equality between the area under the product of function with shifted impulse and the value of function located at unit impulse instant? a. Replication b. Sampling c. Scaling d. Product ANSWER: Sampling 3) Which among the below specified conditions/cases of discrete time in terms of real constant ‘a’, represents the double-sided decaying exponential signal? a. a >