Element 8: Ship Radar Techniques

effective 6/25/2009

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8-E-42: Waveguides-1

8-42E1: Waveguides can be constructed from:

All of the above.

Brass.

Aluminum.

Copper.



8-42E2: A microwave transmission line constructed of a center conductor suspended between parallel conductive ground planes is called:

Stripline.

Microstrip.

Coax.

Waveguide.



8-42E3: Waveguide theory is based upon:

The movement of an electromagnetic field.

Current flow through conductive wires.

Inductance.

Resonant charging.



8-42E4: A waveguide is used at RADAR microwave frequencies because:

It has lower transmission losses than other feedline types.

It is easier to install than other feedline types.

It is more rugged than other feedline types.

It is less expensive than other feedline types.



8-42E5: Waveguide theory is based on the principals of:

Skin effect and use of ¼ wave stubs.

Ohm’s Law.

High standing waves.

None of the above.



8-42E6: How is the signal removed from a waveguide or magnetron?

With a thin wire called a J-Hook.

With a thin wire called a T-hook.

With a coaxial connector.

With a waveguide flange joint.





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