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Q. |
For a low level AM system, amplifier modulated stage must have |
A. | harmonic devices |
B. | linear devices |
C. | non-linear devices |
D. | class a amplifiers |
Answer» B. linear devices | |
Explanation: in low-level modulation, the generation of amplitude modulated signal takes place at low power levels. the generated am signal is then amplified using a chain of linear amplifiers, which are required to avoid waveform distortion. thus, linear devices are used in low level amplitude modulated system. |
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