Communication Systems In a TV receiver antenna the length of reflector rod Is less than that of dipole Is the same as that of dipole Is more than that of dipole May be equal, more or less than that of dipole Is less than that of dipole Is the same as that of dipole Is more than that of dipole May be equal, more or less than that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Fourier analysis indicate that a square wave can be represented as A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics A fundamental sine wave and odd harmonics A fundamental sine wave and harmonics Fundamental and subharmonic sine waves A fundamental sine wave and even harmonics A fundamental sine wave and odd harmonics ANSWER DOWNLOAD EXAMIANS APP
Communication Systems What is the purpose of peak clipper circuits in radio transmitters? To increase bandwidth To reduce bandwidth To prevent overmodulation To regulate oscillator I/P voltage To increase bandwidth To reduce bandwidth To prevent overmodulation To regulate oscillator I/P voltage ANSWER DOWNLOAD EXAMIANS APP
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 VSB modulation is preferred in TV because None of these It avoids phase distortion at low frequencies It results in better reception It reduces the bandwidth requirement to half None of these It avoids phase distortion at low frequencies It results in better reception It reduces the bandwidth requirement to half ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 1.07 MHz 10.7 MHz 106 kHz 455 kHz 1.07 MHz 10.7 MHz 106 kHz 455 kHz ANSWER DOWNLOAD EXAMIANS APP
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