Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 300 ohm 500 ohm 100 ohm 1000 ohm 300 ohm 500 ohm 100 ohm 1000 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 0.8 0.5 1 0.8 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems DVD uses None of these Laser beam for recording and video head for playback Video head for recording and laser beam for playback Laser beam for both recording and playback None of these Laser beam for recording and video head for playback Video head for recording and laser beam for playback Laser beam for both recording and playback ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it The reflected colour None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The wavelength transmitted through it The reflected colour ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 3 2 1 -3 3 2 1 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Frequency diversity Space diversity Broad band antenna Directional antenna Frequency diversity Space diversity Broad band antenna Directional antenna ANSWER DOWNLOAD EXAMIANS APP
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