Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent excessive grid current Increase the bandwidth Prevent over modulation Prevent tuned circuit damping Prevent excessive grid current Increase the bandwidth Prevent over modulation Prevent tuned circuit damping ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB. 1 3 -3 2 1 3 -3 2 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Skip distance depends on time of day and angle of incidence. True False True False ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be Orthogonal Uncorrelated Statistically independent Correlated Orthogonal Uncorrelated Statistically independent Correlated 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
Communication Systems For a low level AM system, the amplifiers modulated stage must be Class C amplifiers Linear devices Non-linear devices Harmonic devices Class C amplifiers Linear devices Non-linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS