Signal Processing - Study Mode

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[#381] Given h[n] = {1, 2, 3, 2, 1}. It is a linear phase FIR filter because

(A) h[n] = h[N - 1 - n]

(B) h[n] has finite number of samples

(C) h[n] = -h[N - 1 - n]

(D) h[n] = h[N - n]

Correct Answer

(A) h[n] = h[N - 1 - n]

[#382] If a sequence is circularly shifted in time by 8 units, the magnitude response will

(A) remain constant

(B) increase by 8

(C) remain unchanged

(D) shift by 8 units

Correct Answer

(D) shift by 8 units

[#383] A function of one or more variables which conveys information on the nature of physical phenomenon is called

(A) Noise

(B) Interference

(C) System

(D) Signal

Correct Answer

(D) Signal

[#384] Match List-I with List-II in regard to Fourier series of periodic f(t) and select the correct answer using the options given below: List-I (Properties) List-II (Characteristics of the trigonometric form) a. f(t) + f(-t) = 0 1. Even harmonics can exist b. f(t) - f(-t) = 0 2. Odd harmonics can exist c. $${ ext{f}}left( { ext{t}}
ight) + { ext{f}}left( {{ ext{t}} - frac{{ ext{T}}}{2}}
ight) = 0$$ 3. The dc and cosine terms can exist d. $${ ext{f}}left( { ext{t}}
ight) - { ext{f}}left( {{ ext{t}} - frac{{ ext{T}}}{2}}
ight) = 0$$ 4. sine terms can exist 5. cosine terms of even harmonics can exist

(A) a-4, b-5, c-3, d-1

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

(C) a-5, b-4, c-2, d-3

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

Correct Answer

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

[#385] Find the sampling frequency (f s ) in the below figure?

(A) 50 kHz

(B) 10 kHz

(C) 30 kHz

(D) 40 kHz

Correct Answer

(A) 50 kHz