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Identify the mathematical expression for amplitude modulated wave:

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Important Questions on Communication Systems

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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 36
An audio signal of 0.1 V is used in amplitude modulation of a carrier wave of amplitude 0.3. The modulation index is
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 37
A speech signal of 3 kHz is used to modulate a carrier signal of frequency 1 MHz, using amplitude modulation. The frequencies of the side bands will be
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 38
A message signal of frequency ωm is superposed on a carrier wave of frequency ωc to get an amplitude modulated wave (AM).The frequency of the AM wave will be
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 39
A photodetector is made from a compound semiconductor with band gap 0.73 eV. The maximum wavelength it can detect is nearly
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 1
A device which converts one type of energy into other is known as
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 2
The modem is a device used for _____. 
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Gamma Question Bank for Medical Physics>Chapter 25 - Communication Systems>Assignment>Q 35

In an amplitude modulated wave for audio frequency of 500 cycle s-1, the appropriate carrier frequency will be