LESSON EXERCISES
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.
In a diode with an indirectly heated cathode, the element that
collects the electrons is known as the
a.
plate.
c.
getter.
b.
heater.
d.
cathode.
2.
The getter is a substance used to facilitate the operation of
the
a.
space charge.
b.
evacuation process.
c.
beam-forming plates.
d.
electrode within an electronic tube.
3.
In addition to the heater element, a duodiode tube requires a
minimum of
a.
two plates and two cathodes.
b.
one plate and two cathodes.
c.
one cathode and two plates.
d.
two plates and one anode.
51