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WorksheetsBipolar Junction Transistor
Total questions: 22
Worksheet time: 12mins
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
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
In a transistor, collector current is controlled by:
collector voltage
base current
collector resistance
all of the above
A transistor has …………………
one pn junction
two pn junctions
three pn junctions
four pn junctions
Total emitter current is:
IE – IC
IC + IE
IB + IC
IB – IC
The base of a transistor is ………….. doped
heavily
moderately
lightly
none of the above
One function of the transistor is to_____________?
rectify
amplify
limit
control
transistor has 3 electrodes namely
PNP
NPN
Base/ Collector/ Emitter
Drain/ Gate/ Source
Which junction is forward biased when transistor is used as an amplifier?
Emitter-Base
Emitter-Collector
Collector-Base
No junction is forward biased
What are the names of the terminals X, Y and Z?
X = Base, Y = Collector, Z = Emitter
X = Emitter, Y = Base, Z = Collector
X = Collector, Y = Base, Z = Emitter
X = Collector, Y = Emitter, Z = Base
If the transistor operates such that it is either in the saturation or cut-off region, it is operating as
a filter
a switch
a signal amplifier
an emitter follower
What is the type of the transistor shown?
PNP
NPN
BJT
In a transistor ………………..
IE = IC + IB
IB = IC + IE
IE = IC – IB
The emitter current is the sum of the collector current and the base current for both npn and pnp types of BJT
True
False
When the transistor is in saturation, base-emitter and base-collector junctions are reverse-biased
True
False
At the base-emitter junctions of a transistor, one finds
a reverse bias
a wide depletion layer
low resistance
none of the above
Most of the majority carriers from the emitter
recombine in the base
recombine in the emitter
pass through the base region to the collector
none of the above
