Top 100+ Electronic Devices And Circuits Interview Questions And Answers
Question 1. Define Electronics?
Answer :
The department of engineering which offers with conduction of current via vacuum or fuel or a semiconductor.
Question 2. Define Semiconductor?
Answer :
Semiconductor is a substance has its resistivity in between conductors and insulators. E.G. Silicon, Germanium.
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Question three. Define Conductor?
Answer :
The substances, which allow electric powered modern to bypass via them, are known as conductors. E.G. Copper.
Question four. Define Insulator?
Answer :
Material, which does now not permit the passage of electrical modern thru them.E.G. Glass, wood, and so forth.
Question five. Define Energy Band Diagram?
Answer :
It is diagram drawn among interatomic spacing alongside the X-axis and the band strength alongside the Y-axis.
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Question 6. What Are Free Electrons?
Answer :
The valence electrons, which can be very loosely connected to the nucleus, are known as loose electrons.
Question 7. Define Doping?
Answer :
The system of adding impurities to an intrinsic semiconductor is called doping.
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Question 8. Define Intrinsic Semiconductor?
Answer :
Semiconductor in an extremely pure form is known as intrinsic semiconductor. Its valence shell must be tetravalent in nature.
Question nine. Define Extrinsic Semiconductor?
Answer :
Semiconductor in an impure shape is called extrinsic semiconductor.
They are two kinds
P-type
N-kind.
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Question 10. Define Valence Band?
Answer :
The range of strength possessed with the aid of valence electron in an atom is called Valence band.
Question eleven. Define Conduction Band?
Answer :
The variety of electricity possessed through conduction electron in an atom is called conduction band.
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Question 12. Explain Forbidden Energy Gap?
Answer :
The separation between the conduction band and the valence band at the energy band diagram.
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Question thirteen. Define P-n Junction?
Answer :
When P-type and N-kind are certainly joined together through the engaging in surfaces of these two semiconductors is called P-N junction.
Question 14. Define Forward Biasing?
Answer :
When a diode is forward biased the cutting-edge is produced due to the fact the holes in the P-place and electron from N-location actions towards the junction. The depletion location shaped might be very small for this reason recombination takes place and contemporary might be produced.
Question 15. Define Reverse Biasing?
Answer :
When a reverse biased voltage is given an electron from N-area and holes from P-vicinity movements faraway from the junction,subsequently the depletion region shaped is very excessive and consequently a small modern-day will be produced due to minority providers.
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Question 16. Define Reverse Resistance?
Answer :
The resistance offered by means of the diode in its opposite biased circumstance is known as reverse resistance.
Question 17. Define Forward Resistance?
Answer :
The resistance offered through the diode in its ahead biased circumstance while a voltage is given is known as ahead resistance.
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Question 18. Define Transition Capacitance?
Answer :
The P-N place on either of the dielectric media act because the plates for this reason we've components for making a plate capacitor the junction capacitance is known as transition capacitance.
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Question 19. Define Power Rating?
Answer :
The strength rating of a diode is described because the most fee of electricity that may be dissipated with out failure if V f is the ahead biased voltage and I f is the forward biased cutting-edge.
Pd= V f x I f.
Question 20. Define Diffusion Capacitance?
Answer :
This capacitance impact is present while the junction is ahead biased it's far known as diffusion capacitance.
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Question 21. Define Drift Velocity And Drift Current?
Answer :
When an electric discipline is implemented the price providers actions in the contrary route and bring current this end result is drift present day and internet common velocity is known as go with the flow velocity.
Question 22. Define Transition Time?
Answer :
Only after the minority companies are swept of the junction the diode voltage starts offevolved to opposite and the diode modern-day decreases exponentially the time which elapses between and whilst the diode usually recovered is the known as transition time.
Question 23. Define Storage Time?
Answer :
When the conduction diode is reverse biased the voltage does now not turn out to be zero. Immediately up to time t 1 the diode is conducting within the ahead direction. The time interval t = t 2 –t1 all through which the saved minority companies reduces to 0 is called storage time (t s).
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