18.
The pulse transformer used to couple the modulator's output pulse to
the magnetron is different from a conventional transformer in that its
windings are designed to have
a.
loose coupling and few turns.
b.
close coupling and few turns.
c.
loose coupling and many turns.
d.
close coupling and many turns.
19.
The frequency at which the antenna shown in Figure 70 sends the RF
pulses into space is determined by the
a.
TD of the PFN.
b.
number of sections used in the PFN.
c.
resonant frequency of the magnetron.
d.
frequency of the positive triggers applied to V2.
20.
If the antenna shown in Figure 70 is to be used for both transmitting
and receiving, an additional section of waveguide will be connected to
the existing waveguide.
At the junction of the two waveguides, a
component is placed which will allow one antenna to be used for both
transmitting and receiving. This component is called
a.
a relay.
b.
a duplexer.
c.
a thyratron.
d.
an interlock.
Check your answers with lesson 2 solution sheet.
100
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