Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent over modulation Prevent tuned circuit damping Prevent excessive grid current Increase the bandwidth Prevent over modulation Prevent tuned circuit damping Prevent excessive grid current Increase the bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Full duplex operation permits transmission in both directions at the same time. True False True False 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. 70.2 113 102.3 80.9 70.2 113 102.3 80.9 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 Half duplex arrangement Duplex arrangement Neither A nor B Either A or B Half duplex arrangement Duplex arrangement Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Communication Systems A three stage telephone switching structure is to have 128 input and 128 output terminals. There are 16 first stage and 16 third stage matrices. To avoid blocking the number of intermediate paths required is 8 1 15 16 8 1 15 16 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are 200 and 10.01 200 and 100.1 200 and 1.01 200 and 200 200 and 10.01 200 and 100.1 200 and 1.01 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS