a. input voltage.
b. input resistance.
c. collector voltage.
d. emitter-to-base bias.
17. Assume that a frequency of 2.5 MHz is applied to a transistorized multiplier
stage. If the output of the stage is 10 MHz, what is the approximate efficiency of
the circuit?
a. 4 percent
c.
50 percent
b. 25 percent
d.
67 percent
18. Whenever the multiplication factor of the circuit shown in figure 3-1 is
changed, several output characteristics also change. A change that is noticed when
the multiplication factor is increased is:
a. increase in output efficiency.
b. increase in output power.
c. decrease in output power.
d. decrease in output voltage.
19. The purpose of the discharge diodes in the push-pull amplifier shown in
figure 3-7 is to
a. establish a small reverse bias for each transistor.
b. discharge any positive base potential.
c. maintain base bias at 0 volt.
d. rectify the base current.
20. How can you arrange transistor
to
obtain
push-pull
operation
without using a phase inversion stage?
a. Connect two PNP transistors in parallel.
b. Connect two NPN transistors in series.
c. Connect two NPN transistors in a complementary symmetrical arrangement.
d. Connect
NPN
and
PNP
transistors
in
a
complementary
symmetrical
arrangement.
CHECK YOUR ANSWERS WITH LESSON 3 SOLUTION SHEET PAGE 52, 53 and 54.
35
Previous Page
