Login or Register for FREE!
Subelement ZLD
The Radio Receiver
Section ZLD16
Receiver Block Diagrams
In the block diagram of the receiver shown, the "RF amplifier"
  • decreases random fluctuation noise
  • is a restoring filter amplifier
  • Correct Answer
    increases the incoming signal level
  • changes the signal frequency
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "mixer"
  • Correct Answer
    combines signals at two different frequencies to produce one at an intermediate frequency
  • combines sidebands to produce a stronger signal
  • discriminates against SSB and AM signals
  • inserts a carrier wave to produce a true FM signal
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the output frequency of the "oscillator" is
  • the same as that of the incoming received signal
  • the same as that of the IF frequency
  • Correct Answer
    different from both the incoming signal and IF frequencies
  • at a low audio frequency
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "filter" rejects
  • AM and RTTY signals
  • Correct Answer
    unwanted mixer outputs
  • noise bursts
  • broadcast band signals
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "IF amplifier" is an
  • isolation frequency amplifier
  • intelligence frequency amplifier
  • indeterminate frequency amplifier
  • Correct Answer
    intermediate frequency amplifier
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "product detector"
  • produces an 800 Hz beat note
  • separates CW and SSB signals
  • rejects AM signals
  • Correct Answer
    translates signals to audio frequencies
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "AF amplifier"
  • rejects AM and RTTY signals
  • Correct Answer
    amplifies audio frequency signals
  • has a very narrow passband
  • restores ambiance to the audio
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "BFO" stands for
  • bad frequency obscurer
  • basic frequency oscillator
  • Correct Answer
    beat frequency oscillator
  • band filter oscillator
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, most of the receiver gain is in the
  • RF amplifier
  • Correct Answer
    IF amplifier
  • AF amplifier
  • mixer
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "RF amplifier"
  • decreases random fluctuation noise
  • masks strong noise
  • Correct Answer
    should produce little internal noise
  • changes the signal frequency
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "mixer"
  • Correct Answer
    changes the signal frequency
  • rejects SSB and CW signals
  • protects against receiver overload
  • limits the noise on the signal
This question does not yet have an explanation! Register to add one

Tags: none

In the receiver shown, when receiving a signal, the output frequency of the "oscillator" is
  • the same as that of the signal
  • the same as that of the IF amplifier
  • Correct Answer
    of constant amplitude and frequency
  • passed through the following filter
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "limiter"
  • Correct Answer
    limits the signal to a constant amplitude
  • rejects SSB and CW signals
  • limits the frequency shift of the signal
  • limits the phase shift of the signal
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "frequency demodulator" could be implemented with a
  • product detector
  • Correct Answer
    phase-locked loop
  • full-wave rectifier
  • low-pass filter
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the "AF amplifier"
  • amplifies stereo signals
  • Correct Answer
    amplifies speech frequencies
  • is an all frequency amplifier
  • must be fitted with a tone control
This question does not yet have an explanation! Register to add one

Tags: none

In this receiver, an audio frequency gain control would be associated with the block labelled
  • Correct Answer
    AF amplifier
  • frequency demodulator
  • speaker, phones
  • IF amplifier
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the selectivity would be set by the
  • AF amplifier
  • mixer
  • limiter
  • Correct Answer
    filter
This question does not yet have an explanation! Register to add one

Tags: none

In the FM communications receiver shown in the block diagram, the "filter" bandwidth is typically
  • 3 kHz
  • Correct Answer
    10 kHz
  • 64 kHz
  • 128 kHz
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, an automatic gain control (AGC) circuit would be associated with the
  • Speaker
  • Correct Answer
    IF amplifier
  • RF filter
  • Oscillator
This question does not yet have an explanation! Register to add one

Tags: none

In the block diagram of the receiver shown, the waveform produced by the "oscillator" would ideally be a
  • square wave
  • pulsed wave
  • Correct Answer
    sinewave
  • hybrid frequency wave
This question does not yet have an explanation! Register to add one

Tags: none

Go to ZLC15 Go to ZLE18