Communication Systems A woofer should be fed from the input through a High pass filter Band pass filter Low pass filter Band stop filter High pass filter Band pass filter Low pass filter Band stop filter ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Gets increased by 50 percent Gets doubled Gets halved Remains unchanged Gets increased by 50 percent Gets doubled Gets halved Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are 200 and 1.01 200 and 10.01 200 and 100.1 200 and 200 200 and 1.01 200 and 10.01 200 and 100.1 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Non-linear devices Harmonic devices Linear devices Class C amplifiers Non-linear devices Harmonic devices Linear devices Class C amplifiers ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by The wavelength transmitted through it None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour The wavelength transmitted through it None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is due to transverse nature of waves Is caused by reflection Results from longitudinal nature of waves Is always vertical in an isotropic medium Is due to transverse nature of waves Is caused by reflection Results from longitudinal nature of waves Is always vertical in an isotropic medium ANSWER DOWNLOAD EXAMIANS APP
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