Communication Systems A buffer amplifier is A high gain D.C. amplifier None of these A cathode follower stage A double-tuned amplifier A high gain D.C. amplifier None of these A cathode follower stage A double-tuned amplifier 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 An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 102.3 113 70.2 80.9 102.3 113 70.2 80.9 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A cordless telephone using separate frequencies for transmission in base and portable units is known as Half duplex arrangement Neither A nor B Either A or B Duplex arrangement Half duplex arrangement Neither A nor B Either A or B Duplex arrangement ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour None of these The wavelength transmitted through it Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour None of these The wavelength transmitted through it ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a FM receiver, amplitude limiter Amplifiers low frequency signals None of these Eliminates any change in amplitude of received FM signals Reduces the amplitude of signals Amplifiers low frequency signals None of these Eliminates any change in amplitude of received FM signals Reduces the amplitude of signals ANSWER DOWNLOAD EXAMIANS APP
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