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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Study of properties of Linear time-invariant system

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Two systems with impulse responses h1 (t) and h2 (t) are connected in cascade. Then the overall impulse response of the cascaded system is given by

a: Product of h1 (t) and h2 (t) Explanation

Explanation

b: Sum of h1 (t) and h2 (t) Explanation

Explanation

c: Convolution of h1 (t) and h2 (t) Explanation

Explanation

d: Subtraction of h2 (t) from h1 (t) Explanation

Explanation

Which system among the following is a time invariant system

a: y(n) = n x(n) Explanation

Explanation

b: y(n) = x(n) – x(n-1) Explanation

Explanation

c: y(n) = x(-n) Explanation

Explanation

d: y(n) = x(n) cos 2nf Explanation

Explanation

Which of the following is a causal system?

a: y(n) = 3x(n) – 2x(n-1) Explanation

Explanation

b: y(n) = 3x(n) + 2x(n+1) Explanation

Explanation

c: y(n) = 3x(n+1) + 2x(n-1) Explanation

Explanation

d: y(n) = 3x(n+1) + 2x(n-1) + x(n) Explanation

Explanation

Which of the following is a dynamic system?

a: y(n) = y(n-1) + y(n+1) Explanation

Explanation

b: y(n) = y(n-1) Explanation

Explanation

c: y(n) = x(n) Explanation

Explanation

d: y(n) + y(n+1) + y(n+3) = 0 Explanation

Explanation

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