Communication Systems The direction of rotation of a CD is Anticlockwise Mostly anticlockwise but some times clockwise Clockwise Clockwise or anticlockwise depending on frequency of data stored Anticlockwise Mostly anticlockwise but some times clockwise Clockwise Clockwise or anticlockwise depending on frequency of data stored ANSWER DOWNLOAD EXAMIANS APP
Communication Systems If sampling is done at the rate of 10 kHz. The bandwidth required is 1280 kHz 70 kHz 35 kHz 10 kHz 1280 kHz 70 kHz 35 kHz 10 kHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To increase bandwidth To prevent overmodulation To regulate oscillator I/P voltage To reduce bandwidth To increase bandwidth To prevent overmodulation To regulate oscillator I/P voltage To reduce bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Linear devices Non-linear devices Class C amplifiers Harmonic devices Linear devices Non-linear devices Class C amplifiers Harmonic devices 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
Communication Systems For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as 2E 4E 3E 6E 2E 4E 3E 6E ANSWER DOWNLOAD EXAMIANS APP
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