Electronics Mcqs
Our collections of Multiple choice questions and answers focuses on study of Electronics in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Electronics in Physics comprehensively.
17. p-n junction when reversed biased acts as a
Capacitor
Inductor
On switch
Off switch
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18. Semi-conductor germanium and silicon are
Pentavalent
Trivalent
Divalent
Tetravalent
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19. Semi-conductors with donor atoms and free electrons belong to the type
N
P
Mix
Any of above
20. The alternating voltage is an example of
A digital waveform
An analogue waveform
Discrete waveform
None at all
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21. The device or circuit used for conversion of A.C. into D.C. is called
An amplifier.
A rectifier
Filtering circuit
Converter.
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22. The device used for conversion of D.C. to A.C. is called
Converter
A rectifier
Inverter
Oscillator
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23. The electronic circuits which implement the various logic operations are called
Logic gates
Boolean algebra
Amplifier gain
Logic functions
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24. The especially designed semiconductor diodes used as indicator lamps in electronic circuits are
The switch
The light emitting diode
The photo diodes
Solar cells.
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25. The operation of a transistor requires
That the emitter be heated
That the base be heated
That the collector be heated
None of the above
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26. The operational amplifier is
A high gain amplifier
A high-power amplifier
A high resistance amplifier
A low resistance amplifier
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27. The rectangular voltage is an example of
An analogue waveform
Continuous wave form
Electronic waveform
A digital waveform
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28. The semiconductor diode can be used as a rectifier because _
It has low resistance to the current flow when forward biased & high resistance when reverse biased.
It has low resistance to the current flow when forward biased.
It has high resistance to the current flow when reverse biased
Its conductivity increases with rise of temperature.
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29. The simplest type of rectification known as half wave rectification is obtained by
Using a transistor
Suppressing the harmonics in A.C voltage
Suppressing half wave of A.C supply by using diode
Using a Coolidge tube
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30. The specially designed semi-conductor diodes used as fast counters in electronic circuits are
The light emitting diodes
Photo diodes
Photo voltaic cell
Solar cells.
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