Communication Systems A modem is classified as low speed if data rate handled is Upto 250 bps Upto 600 bps Upto 100 bps Upto 400 bps Upto 250 bps Upto 600 bps Upto 100 bps Upto 400 bps ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 1280 kHz 35 kHz 70 kHz 10 kHz 1280 kHz 35 kHz 70 kHz 10 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Limit noise picked by a receiver Produce 100% modulation Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband Limit noise picked by a receiver Produce 100% modulation Produce balanced modulation of a carrier wave Suppress carrier signal in order to create a single-sideband or double sideband 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 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 100.1 200 and 1.01 200 and 10.01 200 and 200 200 and 100.1 200 and 1.01 200 and 10.01 200 and 200 ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The modulation index of an FM is changed from 0 to 1. How does the transmitted power change? Gets increased by 50 percent Gets doubled Gets halved Remains unchanged Gets increased by 50 percent Gets doubled Gets halved Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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