LESSON 4 - TRIODE CHARACTERISTICS
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.
Assume that a 0.2-volt change in the grid voltage on a certain
triode causes exactly the same change in plate current as does a 4.0-
The amplification factor () of this
volt change in plate voltage.
triode is
a.
2.
c.
20.
b.
4.
d.
40.
2.
Assume that a certain tube's plate current increases from 4 mA
to 5 mA when the grid voltage, Ecc , changes by 0.5 volt. If plate
voltage must be decreased 30 volts to return the plate current to 4
mA, the tube's amplification factor () is approximately
a.
4.
c.
30.
b.
15.
d.
60.
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