Signal Processing - Practice Test

[#231] The region of convergence of the z-transform of a unit step function is

(A) |z| > 1

(B) |z| < 1

(C) (Real part of z) > 0

(D) (Real part of z) < 0

(E) |z| > 1

(F) |z| < 1

(G) (Real part of z) > 0

(H) (Real part of z) < 0

Correct Answer

(A) |z| > 1
(E) |z| > 1

[#232] Poles of Butterworth and Chebyshev low pass filters are located on . . . . . . . . and . . . . . . . . respectively in s-plane.

(A) Ellipse, circle

(B) Circle, ellipse

(C) Circle, circle

(D) Standard ellipse, tilted ellipse

Correct Answer

(B) Circle, ellipse

[#233] Match List-I with List-II and select the correct answer using the options given below: List-I (Time Function) List-II (Fourier Spectrum/Fourier Transform) a. Periodic Function 1. Continuous spectrum at all frequencies b. Aperiodic Function 2. -jπ{δ(ω - ω 0 ) - δ(ω + ω 0 )} c. Unit Impulse δ(t) 3. Line discrete spectrum d. sin ω(t) 4. 1

(A) a-4, b-2, c-3, d-1

(B) a-3, b-1, c-4, d-2

(C) a-4, b-1, c-3, d-2

(D) a-3, b-2, c-4, d-1

Correct Answer

(B) a-3, b-1, c-4, d-2

[#234] Which of the following is introduced in the frequency sampling realization of the FIR filter?

(A) Poles are more in number on unit circle

(B) Zeros are more in number on the unit circle

(C) Poles and zeros at equally spaced points on the unit circle

(D) None of the above

Correct Answer

(C) Poles and zeros at equally spaced points on the unit circle

[#235] The convolution of f(t) with itself is given to be $$int_0^t {fleft( au
ight)d au .} $$ xa0 Then what is f(t)?

(A) The unit ramp function

(B) Equal to 1

(C) The unit step function

(D) The unit impulse function

Correct Answer

(C) The unit step function

Signal Processing - Study Mode

[#231] The region of convergence of the z-transform of a unit step function is

Correct Answer

[#232] Poles of Butterworth and Chebyshev low pass filters are located on . . . . . . . . and . . . . . . . . respectively in s-plane.

Correct Answer

Correct Answer

[#234] Which of the following is introduced in the frequency sampling realization of the FIR filter?

Correct Answer

[#235] The convolution of f(t) with itself is given to be $$int_0^t {fleft( au ight)d au .} $$ xa0 Then what is f(t)?

Correct Answer

[#235] The convolution of f(t) with itself is given to be $$int_0^t {fleft( au
ight)d au .} $$ xa0 Then what is f(t)?