6.
Electron tubes are classified as diodes, triodes, tetrodes and
pentodes according to
a.
their circuit function.
b.
c.
the Edison effect.
d.
the number of elements.
7.
In all electron tubes, the emitter of electrons is called the
a.
cathode.
c.
grid.
b.
anode.
d.
plate.
For questions 8-12, draw the correct output for function listed.
8.
Amplifier.
19
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