8-C-23: Detectors - Video Amplifiers
8-23C1:
Which of the following statements is correct?
The video amplifier is located between the I.F. amplifier and the display system.
The video amplifier is located between the mixer and the I.F. amplifier.
The video amplifier operates between 60 MHz and 120 Mhz.
The video amplifier is located between the local oscillator and the mixer.
8-23C2:
Video amplifiers in pulse RADAR receivers must have a broad bandwidth because:
Weak pulses must be amplified.
High frequency sine waves must be amplified.
The RADARs operate at PRFs above 100.
The pulses produced are normally too wide for video amplification.
8-23C3:
In video amplifiers, compensation for the input and output stage capacitances must be accomplished to prevent distorting the video pulses. This compensation is normally accomplished by connecting:
An inductor in series with the input capacitance and an inductor in parallel with the output capacitance.
Inductors in parallel with both the input and output capacitances.
Resistances in parallel with both the input and output capacitances.
An inductor in parallel with the input capacitance and an inductor in series with the output capacitance.
8-23C4:
Which of the following signals is not usually an input to the video amplifier?
Resolver.
Range.
Brilliance.
Contrast.
8-23C5:
Which of the following signals are usually an input to the video amplifier?
All of the above.
Range.
Brilliance.
Contrast.
8-23C6:
The video (second) detector in a pulse modulated RADAR system would most likely use a/an:
Diode detector.
Discriminator detector.
Ratio detector.
Infinite impedance detector.
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
