Communication Systems Which of the following is an indirect way of generating FM? Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator Reactance FET modulator Varactor diode modulator Reactance bipolar transistor Armstrong modulator ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a low level AM system, the amplifiers modulated stage must be Non-linear devices Linear devices Class C amplifiers Harmonic devices Non-linear devices Linear devices Class C amplifiers Harmonic devices 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 3E 6E 4E 2E 3E 6E 4E 2E ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To regulate oscillator I/P voltage To prevent overmodulation To reduce bandwidth To increase bandwidth To regulate oscillator I/P voltage To prevent overmodulation To reduce bandwidth To increase bandwidth ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The main function of a balanced modulator is to Produce 100% modulation Suppress carrier signal in order to create a single-sideband or double sideband Produce balanced modulation of a carrier wave Limit noise picked by a receiver Produce 100% modulation Suppress carrier signal in order to create a single-sideband or double sideband Produce balanced modulation of a carrier wave Limit noise picked by a receiver ANSWER DOWNLOAD EXAMIANS APP
Communication Systems As per Shannon-Hartley theorem, a noise less Gaussian channel has Infinite capacity Small capacity None of these Zero capacity Infinite capacity Small capacity None of these Zero capacity ANSWER DOWNLOAD EXAMIANS APP
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