Communication Systems Leak type bias is used in plate modulated class C amplifier to Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Linear devices Class C amplifiers Non-linear devices Harmonic devices Linear devices Class C amplifiers Non-linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Fourier analysis indicate that a square wave can be represented as A fundamental sine wave and even harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and odd harmonics A fundamental sine wave and even harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and odd harmonics ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In a FM receiver, amplitude limiter Eliminates any change in amplitude of received FM signals Amplifiers low frequency signals None of these Reduces the amplitude of signals Eliminates any change in amplitude of received FM signals Amplifiers low frequency signals None of these Reduces the amplitude of signals ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The frequency range of 300 kHz to 3000 kHz is known as Very high frequency Medium frequency High frequency Low frequency Very high frequency Medium frequency High frequency Low frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To prevent overmodulation To increase bandwidth To regulate oscillator I/P voltage To reduce bandwidth To prevent overmodulation To increase bandwidth To regulate oscillator I/P voltage To reduce bandwidth ANSWER DOWNLOAD EXAMIANS APP
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