Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 2 3 1 -3 2 3 1 -3 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A cordless telephone using separate frequencies for transmission in base and portable units is known as Either A or B Duplex arrangement Half duplex arrangement Neither A nor B Either A or B Duplex arrangement Half duplex arrangement Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent excessive grid current Prevent over modulation Prevent tuned circuit damping Increase the bandwidth Prevent excessive grid current Prevent over modulation Prevent tuned circuit damping Increase the bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The direction of rotation of a CD is Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Anticlockwise Clockwise Clockwise or anticlockwise depending on frequency of data stored Mostly anticlockwise but some times clockwise Anticlockwise Clockwise ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Free running multi-vibrator Monostable multi-vibrator JK flip-flop Schmitt trigger Free running multi-vibrator Monostable multi-vibrator JK flip-flop Schmitt trigger ANSWER DOWNLOAD EXAMIANS APP
Communication Systems One of the advantages of base modulation over collector modulation of a transistor class C amplifier is High power output per transistor The lower modulating power requirement Improved efficiency Better linearity High power output per transistor The lower modulating power requirement Improved efficiency Better linearity ANSWER DOWNLOAD EXAMIANS APP
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