Communication Systems The main function of a balanced modulator is to 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 Produce 100% modulation Suppress carrier signal in order to create a single-sideband or double sideband ANSWER DOWNLOAD EXAMIANS APP
Communication Systems When the length of antenna is a whole wavelength The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum The radiation is maximum in all directions The radiation is zero in all directions The radiation at right angles is zero The radiation at right angles is maximum The radiation is maximum in all directions 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 halved Remains unchanged Gets increased by 50 percent Gets doubled Gets halved Remains unchanged Gets increased by 50 percent Gets doubled ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which one of the following is analog? PWM Delta modulation Differential PCM PCM PWM Delta modulation Differential PCM PCM ANSWER DOWNLOAD EXAMIANS APP
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 May be equal, more or less than that of dipole Is more than that of dipole Is less than that of dipole Is the same as that of dipole May be equal, more or less than that of dipole Is more than that of dipole ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Which of the following is used to generate PDM? Free running multi-vibrator JK flip-flop Schmitt trigger Monostable multi-vibrator Free running multi-vibrator JK flip-flop Schmitt trigger Monostable multi-vibrator ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS