Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 300 ohm 1000 ohm 100 ohm 500 ohm 300 ohm 1000 ohm 100 ohm 500 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is due to transverse nature of waves Results from longitudinal nature of waves Is caused by reflection Is always vertical in an isotropic medium Is due to transverse nature of waves Results from longitudinal nature of waves Is caused by reflection Is always vertical in an isotropic medium ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent tuned circuit damping Increase the bandwidth Prevent over modulation Prevent excessive grid current Prevent tuned circuit damping Increase the bandwidth Prevent over modulation Prevent excessive grid current ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 1 -3 2 3 1 -3 2 3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 10 kHz 1280 kHz 35 kHz 70 kHz 10 kHz 1280 kHz 35 kHz 70 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The frequency range of 300 kHz to 3000 kHz is known as High frequency Low frequency Medium frequency Very high frequency High frequency Low frequency Medium frequency Very high frequency ANSWER DOWNLOAD EXAMIANS APP
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