## Analog Communication Question with Answer

11. Which is incorrectly matching statement

1. Periodic and Aperiodic
2. Causal and Non Causal
3. Deterministic and Random
4. Digital and Continuous

12. Spot the incorrect periodic signal among the following

1. Exponential Function
2. Sine Function
3. Square wave function
4. Cosine Function

13. An Energy signal has Energy and Power Specification as

1. P =unity and E = finite
2. P =0 and E = finite
3. P =infinite and E = finite
4. P =finite and E = 0

14. A power signal has power and energy specification as

1. Power = 0 and Energy = infinite
2. Power = infinite and Energy = 0
3. Power = finite and Energy = finite
4. Power = finite and Energy = infinite

15. The three standard colors used for video transmission are

1. red, yellow, green
2. blue, yellow, white
3. red, blue, yellow
4. red, blue, green

16. Time domain analysis explains a signal in

1. Time - Frequency Axes
2. Frequency - Amplitude Axes
3. Frequency - Phase Axes
4. Time - Amplitude Axes

17. Frequency domain analysis explains a signal in

1. Frequency - Phase Axes
2. Frequency - Time Axes
3. Frequency - Amplitude Axes
4. Time - Amplitude Axes

18. When a sinusoidal signal is viewed along the frequency axes, t appears like

1. sinusoidal wave
2. sinusoidal wave with 90 degree phase shift
3. A straight line equal to the height of sinusoid
4. cosine wave

19. Any non-sinusoidal waveform can be expressed as the sum of various sinusoidal components

1. cant say
2. none of these
3. true
4. false

20. which of the following is the correct application of Fourier analysis

1. Acoustics and Oceanography
2. All of the above
3. Image processing
4. X-ray crystallography