Digital Signal Processing Quiz Answers | Digital Signal Processing MCQs

1 In general, a digital system designer has better control of tolerances in a digital signal processing system than an analog system designer who is designing an equivalent analog system.

A True

B False

View Answer

Answer:True

2 The term ‘bandwidth’ represents the quantitative measure of a signal.

A True

B False

View Answer

Answer:True

3 What is the frequency range(in Hz) of Electroencephalogram(EEG)?

A 10-40

B 1000-2000

C 0-100

D None of the mentioned

View Answer

Answer:0-100

4 Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?

A Radio broadcast

B Shortwave radio signal

C RADAR

D Infrared signal

View Answer

Answer:Radio broadcast

5 Which of the following relations are true if x(n) is real?

A X(ω)=X(-ω)

B X(ω)=-X(-ω)

C X*(ω)=X(ω)

D X*(ω)=X(-ω)

View Answer

Answer:X*(ω)=X(-ω)

6 If X(ω) is the Fourier transform of the signal x(n), then what is the Fourier transform of the signal x(n-k)?

A e^jωk. X(-ω)

B e^jωk. X(ω)

C e^-jωk. X(-ω)

D e^-jωk. X(ω

View Answer

Answer:e^-jωk. X(ω

7 What is the convolution of the sequences of x₁(n)=x₂(n)={1,1,1}?

A {1,2,3,2,1}

B {1,2,3,2,1}

C {1,1,1,1,1}

D {1,1,1,1,1}

View Answer

Answer:{1,2,3,2,1}

8 If x(n)=Ae^jωn is the input of an LTI system and h(n) is the response of the system, then what is the output y(n) of the system?

A H(-ω)x(n)

B -H(ω)x(n)

C H(ω)x(n)

D None of the mentioned

View Answer

Answer:H(ω)x(n)

9 If the system gives an output y(n)=H(ω)x(n) with x(n) = Ae^jωnas input signal, then x(n) is said to be Eigen function of the system.

A True

B False

View Answer

Answer:True

10 If the Eigen function of an LTI system is x(n)= Ae^jnπ and the impulse response of the system is h(n)=(1/2)ⁿu(n), then what is the Eigen value of the system?

A 3/2

B -3/2

C -2/3

D 2/3

View Answer