Transistors Mcqs
This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “Transistors ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Transistors comprehensively.
2. IC = ß IB +__________?
ICBO
IC
ICEO
AIE
3. The output impedance of a transistor connected in_____________arrangement is the highest?
Common emitter
Common collector
Common base
None of the above
Answer & Solution
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4. IC = aIE +____________?
IB
ICEO
ICBO
ßIB
5. In a pnp transistor, the current carriers are______________?
Acceptor ions
Donor ions
Free electrons
Holes
6. The collector of a transistor is____________doped?
Heavily
Moderately
Lightly
None of the above
Answer & Solution
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7. In a npn transistor,_____________are the minority carriers?
Free electrons
Holes
Donor ions
Acceptor ions
8. The input impedance of a transistor is___________?
High
Low
Very high
Almost zero
9. The value of a of a transistor is_____________?
More than 1
Less than 1
1
None of the above
Answer & Solution
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10. In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of ß is____________?
100
50
About 1
200
11. The relation between ß and a is______________?
ß = 1 / (1 – a )
ß = (1 – a ) / a
ß = a / (1 – a )
ß = a / (1 + a )
Answer & Solution
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12. The phase difference between the input and output voltages in a common base arrangement is___________?
180o
90o
270o
0o
13. The leakage current in CE arrangement is____________that in CB arrangement?
More than
Less than
The same as
None of the above
Answer & Solution
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14. If the value of a is 0.9, then value of ß is___________?
9
0.9
900
90
15. BC 147 transistor indicates that it is made of____________?
Germanium
Silicon
Carbon
None of the above