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 For AM receivers the standard IF frequency is 455 kHz 1.07 MHz 10.7 MHz 106 kHz 455 kHz 1.07 MHz 10.7 MHz 106 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The characteristic impedance of a twin wire feeder used for TV signals is about 100 ohm 1000 ohm 300 ohm 500 ohm 100 ohm 1000 ohm 300 ohm 500 ohm ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is Single tone modulation FSK Two tone modulation PCM Single tone modulation FSK Two tone modulation PCM 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 FM transmitting and receiving equipment as compared to AM equipment is Almost equally costly Costly Cheaper None of these Almost equally costly Costly Cheaper None of these ANSWER DOWNLOAD EXAMIANS APP
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