Signal Processing - Practice Test

[#101] The LTI system with h(t) = e -t , -∞ < t < ∞ is

(A) Causal and stable

(B) Causal and unstable

(C) Non-causal and stable

(D) Non-causal and unstable

Correct Answer

(D) Non-causal and unstable

[#102] Digital filters have . . . . . . . . and are best suited for . . . . . . . . phase.

(A) Less accuracy, linear

(B) High accuracy, linear

(C) High accuracy, non linear

(D) High accuracy, no linear

Correct Answer

(B) High accuracy, linear

[#103] The response of a Gaussian random process applied to a stable linear system is: 1. A Gaussian random process 2. Not a Gaussian random process 3. Completely specified by its mean and auto covariance functions Which of the above statements is/are correct?

(A) 1 only

(B) 2 only

(C) 2 and 3

(D) 1 and 3

Correct Answer

(D) 1 and 3

[#104] A rectangular pulse of duration T is applied to a filter matched to this input. The output of the filter is a

(A) Rectangular pulse of duration T

(B) Rectangular pulse of duration 2T

(C) Triangular pulse of duration 2T

(D) Triangular pulse of duration T

(E) Rectangular pulse of duration T

(F) Rectangular pulse of duration 2T

(G) Triangular pulse

(H) Sine function

Correct Answer

(C) Triangular pulse of duration 2T
(G) Triangular pulse

[#105] If X(z) is $$frac{1}{{1 - {z^{ - 1}}}}$$ xa0with |z| > 1, then what is the corresponding x(n)?

(A) e -n

(B) e n

(C) u(n)

(D) δ(n)

Correct Answer

(C) u(n)

Signal Processing - Study Mode

[#101] The LTI system with h(t) = e -t , -∞ < t < ∞ is

Correct Answer

[#102] Digital filters have . . . . . . . . and are best suited for . . . . . . . . phase.

Correct Answer

[#103] The response of a Gaussian random process applied to a stable linear system is: 1. A Gaussian random process 2. Not a Gaussian random process 3. Completely specified by its mean and auto covariance functions Which of the above statements is/are correct?

Correct Answer

[#104] A rectangular pulse of duration T is applied to a filter matched to this input. The output of the filter is a

Correct Answer

[#105] If X(z) is $$frac{1}{{1 - {z^{ - 1}}}}$$ xa0with |z| > 1, then what is the corresponding x(n)?

Correct Answer