Element 8: Ship Radar Techniques

effective 6/25/2009

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8-A-07: Components-1

Figure 8A1

8-7A1: What component of a RADAR receiver is represented by block 46 in Fig. 8A1?

The TR box.

The ATR box.

The RF Attenuator.

The Crystal Detector.



8-7A2: A basic sample-and-hold circuit contains:

An analog switch, a capacitor, amplifiers and input and output buffers.

An analog switch and an amplifier.

An analog switch, a capacitor, and an amplifier.

An analog multiplexer and a capacitor.



8-7A3: When comparing a TTL and a CMOS NAND gate:

Both have active pull-up characteristics.

Both have three output states.

Both have comparable input power sourcing.

Both employ Schmitt diodes for increased speed capabilities.



8-7A4: Silicon crystals:

All of these.

Are very sensitive to static electric charges.

Should be wrapped in lead foil for storage.

Tolerate very low currents.



8-7A5: Which is typical current for a silicon crystal used in a RADAR mixer or detector circuit?

3 mA

15 mA

50 mA

100 mA



8-7A6: What component of a RADAR receiver is represented by block 47 in Fig. 8A1?

The RF Attenuator.

The ATR box.

The TR box.

The Crystal Detector.





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