WorksheetsECE315_output_stages
Total questions: 5
Worksheet time: 3mins
Name
Class
Date
1.
Power amplifiers are needed to
a)
drive small load resistance
b)
increase the output resistance
c)
deliver large current levels
d)
deliver large voltage swings
2.
Emitter Followers are
a)
Class B power amplifiers
b)
Class A power amplifiers
c)
Class AB power amplifiers
d)
Class C power amplifiers
3.
Which of the following has the highest theoretical power efficiency?
a)
Emitter Follower
b)
Push-Pull Output Stage
c)
Improved Pull-Pull Output Stage
4.
Replacing the PNP in a push-pull stage with a composite transistor (NPN assisted with a PNP) results in
a)
lower output resistance
b)
higher output resistance
c)
lower input resistance
d)
higher input resistance
5.
Biasing an improved push-pull output stage requires
a)
1 diode
b)
2 diodes
c)
3 diodes
100 %
