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WorksheetsAE Topic 4 to 6
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Which ONE is true for common emitter (CE) transistor amplifier configuration?
a)
180 degree out of phase
b)
180 in phase
c)
0 degree in phase
d)
0 degree out of phase
2.
Which ONE is the more popular transistor amplifier configuration?
a)
Common Base
b)
Common Collector
c)
Common Emitter
d)
Common Ground
3.
Which configuration is typically used as a current amplifier and impedance matching?
a)
Common Base
b)
Common Collector
c)
Common Emitter
d)
Common Voltage
4.
What is the output phase shift of a common collector configuration?
a)
0 degree
b)
90 degrees
c)
180 degrees
d)
270 degrees
5.
When ambient temperature increase, power rating of transistor _____.
a)
decreases
b)
increases
c)
remains unchange
d)
is at maximum
6.
Refer to the figure, what is the power rating when ambient temperature is 100 degree celcius?
a)
4 W
b)
3 W
c)
2 W
d)
1 W
7.
Which heat sink is the most reliable?
a)
Passive heat sink
b)
Active heat sink
c)
Plastic heat sink
d)
Liquid heat sink
8.
Mica layer has _______ insulation and _______ heat conducting properties.
a)
good, good
b)
good, poor
c)
poor, poor
d)
poor, good
9.
An increase in transistor temperature will ______ its resistance and, hence, ______ the DC current.
a)
decrease, increase
b)
decrease, decrease
c)
increase, decrease
d)
increase, increase
10.
Which ONE has the poorest bias stablisation without prevention of thermal runaway?
a)
Fixed Bias
b)
Emitter Feedback Bias
c)
Collector Feedback Bias
d)
Voltage Divider Bias
11.
Refer to the figure. It is a _______ bias.
a)
Fixed
b)
Emitter Feedback
c)
Collector Feedback
d)
Voltage Divider
12.
Refer to the figure. It is a _____ bias.
a)
Fixed
b)
Emitter Feedback
c)
Collector Feedback
d)
Voltage Divider
13.
Refer to the diagram. What is the typical base-emitter voltage Vbe when it is biased on?
a)
0.3V
b)
0.7V
c)
2.5V
d)
5V
14.
Given Vcc = +5V. What is the voltage across Rb?
a)
0.7V
b)
2.5V
c)
4.3V
d)
5V
15.
Refer to the figure. What is the base current when beta is 100 and collector current Ic is 10mA?
a)
1 uA
b)
10 uA
c)
100 uA
d)
1 mA
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