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Junction Transistor
Quiz 1
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Q.1
Which of the following parameters of BJT is very sensitive to temperature?
RE
beta DC
VCC
RTh
Q.2
Total emitter current is:
IE – IC
IC + IE
IB + IC
IB – IC
Q.3
Which junction is forward biased when transistor is used as an amplifier?
Emitter-Base
Emitter-Collector
Collector-Base
No junction is forward biased
Q.4
To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?
collector-emitter
base-collector
base-emitter
collector-base
Q.5
When transistors are used in digital circuits they usually operate in the:
active region
breakdown region
saturation and cutoff regions
linear region
Q.6
In a transistor, collector current is controlled by:
collector voltage
base current
collector resistance
all of the above
Q.7
Most of the electrons in the base of an NPN transistor flow:
out of the base lead
into the collector
into the emitter
into the base supply
Q.8
Which is beta's current ratio?
IC/IB
IC/IE
IB/IE
IE/IB
Q.9
Which is the higher gain provided by a C-E configuration?
voltage
current
resistance
power
Q.10
The power gain is highest in Common emitter.
True
false
Q.11
An electronic circuit having the capability to amplify power, voltage or current
transformer
attenuator
amplifier
transistor
Q.12
What are the names of the legs on a Bipolar Junction Transistors?
Collector, Anode, and Emitter
Collector, Base, and Gate
Collector, Base, and Emitter
None of these
Q.13
α\alphaα is
voltage amplification factor
current amplification factor
electron amplification factor
hole amplification factor
Q.14
Zener diodes uually operated in
forward bias
reverse bias
above knee voltage
none of these
Q.15
Number of diodes used in centre tap rectifier is
1
2
3
4
Q.16
The collector- base junction of a transistor is ------ biased
Reverse biased
Emitter biased
Both A & B
None of these
Q.17
Rectifier that can be used for high voltage applications is
half wave rectifier
centre tap full wave rectifier
bridge rectifier
all the above
Q.18
Collector of a transistor will be
less doped
moderately doped
heavily doped
without doped
Q.19
A full wave bridge rectifier has an efficiency of ------
100
91.2
81.2
40.6
Q.20
A zener diode is used as a ......
rectifier
amplifier
oscillator
voltae regulator
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