DTFS And DTFT - Electronic Engineering (MCQ) questions & answers

1)   Which property of periodic signal in DTFS gets completely clarified / identified by the equation x (n – n0)?

a. Conjugation
b. Time Shifting
c. Frequency Shifting
d. Time Reversal
Answer  Explanation 

ANSWER: Time Shifting

Explanation:
No explanation is available for this question!
2)   What is the nature of Fourier representation of a discrete & aperiodic signal?

a. Continuous & periodic
b. Discrete & aperiodic
c. Continuous & aperiodic
d. Discrete & periodic
Answer  Explanation 

ANSWER: Continuous & periodic

Explanation:
No explanation is available for this question!
3)   Which among the following assertions represents a necessary condition for the existence of Fourier Transform of discrete time signal (DTFT)?

a. Discrete Time Signal should be absolutely summable
b. Discrete Time Signal should be absolutely multipliable
c. Discrete Time Signal should be absolutely integrable
d. Discrete Time Signal should be absolutely differentiable
Answer  Explanation 

ANSWER: Discrete Time Signal should be absolutely summable

Explanation:
No explanation is available for this question!
4)   What is the possible range of frequency spectrum for discrete time fourier series (DTFS)?

a. 0 to 2π
b. -π to +π
c. Both a & b
d. None of the above
Answer  Explanation 

ANSWER: Both a & b

Explanation:
No explanation is available for this question!
5)   What is/are the crucial purposes of using the Fourier Transform while analyzing any elementary signals at different frequencies?

a. Transformation from time domain to frequency domain
b. Plotting of amplitude & phase spectrum
c. Both a & b
d. None of the above
Answer  Explanation 

ANSWER: Both a & b

Explanation:
No explanation is available for this question!

Related Content

▲