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WorksheetsBasics Transistorn
Total questions: 21
Worksheet time: 11mins
The number of depletion layer in transistor are
two
three
zero
none
The base of transistor is _________________
lightly dopre
moderately doped
heavily doped
Of the three regions,Emitter,Base,collector in a transistor which has the biggest size
collector
Base
Emitter
In PNP transistor the carriers are
Holes
Electrons
none
The collector of transistor is dopped _____
lightly
moderTE
HEAVILY
very highly
In NPN transistor _____________are minority carriers
holes
electrons
atoms
molecules
In a transistor the base current IB is about ----% of emitter current IE
5
2
3
4
At the base- emitter junction of a transistor,one finds ------resistance
(a)
α of a transistor is -------
0.9 to 0.998
1
less than unity
>1
The output resistance of transistor is ------
high
low
moderate
not high nor low
In a transistor,if β=100 and collector current IC =10mA then emitter current IE is -----
10.1 mA
12 mA
9 mA
2mA
Relationship between α and β is β =
1−αα
1+ββ
β
α
The input resistance of a transistor connected in -----arrangement is the highest
Common Collector
lCommon Base
Common Emitter
none
The output resistance of a transistor connected in -----arrangement is the highest.
Common Base
Common Collector
Common emitter
The voltage gain in a transistor connected in ------- arrangement is the highest
Common emitter
Common Base
Common Collector
If the value of α is 0.9,then value of β is -----
90
100
50
400
The most commonly used semiconductor material in the manufacture of a transistor is ------
Silicon
Germanium
Gallium Arsenide
Ge SI
The arrow in the symbol of a transistor indicates the direction of ------
Conventional current
hole current
diffusion current
drift current
The collector- base junction of a transistor is ------ biased
answer
reverse biased
forward biase d
forward biased reverse biased
The transistor NPN to operate in active region
BE-FB& BC -RB
BE-RB &BC RB
BE - FB and BC RB
NPN transistor to operate in saturation region as swith the polarities of the base to emitter BE and Base to collector BC are
both are forward biased
both are reverse biased
one is forward biased and other is reverse biased
