PRACTICE EXERCISE
(Performance-Oriented)
In each of the following exercises, select the ONE answer that BEST
completes the statement or answers the question. Indicate your solution by
circling the letter opposite the correct answer in the subcourse booklet.
1.
The wavelength of the lowest frequency that can be sent down the
waveguide shown in Figure 130 is equal to
a.
the width of the waveguide.
b.
the height of the waveguide.
c.
twice the width of the waveguide.
d.
twice the height of the waveguide.
2.
What determines the lowest frequency that a waveguide can handle?
a.
The length of the waveguide.
b.
The A dimension of the waveguide.
c.
The B dimension of the waveguide.
d.
The method of terminating the waveguide.
3.
Waveguides and resonant cavities differ in the positioning of the E
and H fields and their terminations. The E and H fields in a resonant
cavity are
a.
in phase while the E and H fields in a waveguide are 90 degrees
out of phase.
b.
90 degrees out of phase while the E and H fields in a waveguide
are in phase.
c.
90 degrees out of phase while the E and H fields in a waveguide
are 180 degrees out of phase.
d.
180 degrees out of phase while the E and H fields in a waveguide
are 90 degrees out of phase.
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