A signal with two frequency components at 6 kHz and 12 kHz, is sampled at the rate of 16 kHz and then passed through a Low Pass filter having a cut-off frequency of 16 kHz. The output signal of the filter
A. Is an undistorted version of the original signal
B. Contains the 6 kHz component and a spurious component of 4 kHz
C. Contains only the 6 kHz components
D. Contains both the components of the original signal and two spurious components of 4 kHz and 10 kHz
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Communication Systems
It is found that a ship to ship communication suffers from fading. This can be avoided by using
A. Space diversity
B. Frequency diversity
C. Broad band antenna
D. Directional antenna
A. A double-tuned amplifier
B. A high gain D.C. amplifier
C. A cathode follower stage
D. None of the above
A. Filter method
B. Phase cancellation method
C. Good attenuation characteristics
D. All of the above
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