10
2-5.
Which of the following diagrams
represents a twin-input triode?
1.
2.
3.
4.
2-6.
What advantage(s) does the in-line grid
arrangement of the power pentode have
over the staggered grid arrangement of
the conventional pentode?
1. Higher efficiency
2. Higher power output
3. Both 1 and 2 above
4. Smaller current requirement
2-7.
Which of the following is an advantage
that a power pentode has over a
conventional pentode?
1. Greater opposition to electron flow
2. Higher gain because of staggered
grids
3. Greater sensitivity to small signals
4. Smaller plate current obtained from
large signals
2-8.
What is the primary purpose of the
beam-forming plates in the beam-
power tube?
1. To concentrate the electrons into a
beam
2. To catch any stray electrons in the
tube
3. To act as an extension of the
cathode
4. To give the tube the appearance of
a pentode
2-9.
Which of the following is a name given
to the variable-mu tube?
1. Sharp-cutoff tube
2. Remote-cutoff tube
3. Variable-spaced tube
4. Reversible-bias tube
2-10.
What is the symbol for "mu"?
1.
m
2.
b
3. I
4. L
