Communication Systems The frequency range of 300 kHz to 3000 kHz is known as High frequency Medium frequency Very high frequency Low frequency High frequency Medium frequency Very high frequency Low frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In EM waves, polarization Is always vertical in an isotropic medium Results from longitudinal nature of waves Is caused by reflection Is due to transverse nature of waves Is always vertical in an isotropic medium Results from longitudinal nature of waves Is caused by reflection Is due to transverse nature of waves ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A buffer amplifier is A double-tuned amplifier A high gain D.C. amplifier A cathode follower stage None of these A double-tuned amplifier A high gain D.C. amplifier A cathode follower stage None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a FM receiver, amplitude limiter Reduces the amplitude of signals Eliminates any change in amplitude of received FM signals None of these Amplifiers low frequency signals Reduces the amplitude of signals Eliminates any change in amplitude of received FM signals None of these Amplifiers low frequency signals ANSWER DOWNLOAD EXAMIANS APP
Communication Systems It is found that a ship to ship communication suffers from fading. This can be avoided by using Directional antenna Broad band antenna Space diversity Frequency diversity Directional antenna Broad band antenna Space diversity Frequency diversity ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave None of these Is useful in discrimination between reception of adjacent beams Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave None of these Is useful in discrimination between reception of adjacent beams ANSWER DOWNLOAD EXAMIANS APP
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