ECE :: Communication Systems
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Why does a FM radio station perform better than and AM station radiating the same actual power?
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In amplitude modulation, the magnitude of side bands is
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If fs be the signal frequency and fi be the intermediate frequency then image frequency is given by
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The minimum viewing angle of resolution of human eye is (D is iris opening and λ is wavelength of light)
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In FM,
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The power density spectrum of noise voltage of resistor R can be expressed as
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If k denotes Boltzmann's constant, the rms value of thermal noise voltage is proportional to
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A.
there is a large decrease in noise and hence increase in the signal to noise ratio
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B.
there is a large increase in noise and hence decrease in the signal to noise ratio
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C.
there is a large increase in noise and hence increase in the signal to noise ratio
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D.
there is a large decrease in noise and hence decrease in the signal to noise ratio
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