Radio Receivers A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is 2100 kHz 900 kHz 1650 kHz 750 kHz 2100 kHz 900 kHz 1650 kHz 750 kHz ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) The selectivity will be poor Image frequency rejection is very good Tracking will be improved The local oscillator need not be extremely stable The selectivity will be poor Image frequency rejection is very good Tracking will be improved The local oscillator need not be extremely stable ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Double-spotting Sensitivity Blocking Diversion reception Double-spotting Sensitivity Blocking Diversion reception ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a ratio detector stabilization against signal strength variations is provided the circuit is the same as in a discriminator, except that the diodes are reversed the output is twice that obtainable from a similar phase discriminator the linearity is worse than in phase discriminator stabilization against signal strength variations is provided the circuit is the same as in a discriminator, except that the diodes are reversed the output is twice that obtainable from a similar phase discriminator the linearity is worse than in phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: Product modulator Balance modulator BFO Phase discriminator Product modulator Balance modulator BFO Phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with Double spotting Variable selectivity Double conversion The padder capacitor Double spotting Variable selectivity Double conversion The padder capacitor ANSWER DOWNLOAD EXAMIANS APP
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