Physics Quiz on Tunnel Diode for IIT JEE, NEET, Medical & Engineering Exam

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Physics Quiz on Tunnel Diode

Physics Quiz on Tunnel Diode: Previous trends reveal that NEET aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations. In this post we are providing you Physics quiz on Tunnel Diode.

Physics Quiz on Tunnel Diode

Q1. The tunnelling phenomenon is also known as ________.
a) Bulk semiconductor phenomenon
b) Auto electronic phenomenon
c) Auto electric phenomenon
d) Esaki phenomena

View Answer

b) Auto electronic phenomenon

Q2. From the following statements pick the correct statement about tunnel diode
Statement 1:
It uses the property of negative conductance
Statement 2:
In forward bias the fermilevel of p side becomes higher than the n side It operates at high frequency

a) 1 only
b) 2 only
c) Both
d) None

View Answer

a) 1 only

Q3. In the construction of tunnel diode, why is the pellet soldered to anode contact and a tiny dot to the cathode contact via a mesh screen?
a) For better conduction and reduce inductance respectively
b) For better conduction and reduce inductance respectively
c) For heat dissipation and increase conduction respectively
d) For heat dissipation and reduce induction respectively

View Answer

d) For heat dissipation and reduce induction respectively

Q4. For a tunnel diode, when p is the probability that the carrier crosses the barrier ‘W’ is the width ‘e’ is energy.
a) p ∝ 1/e(-A*e*w)
b) p ∝ e(-A*e*w)
c) p ∝ 1/e(A*e*w)
d) p ∝ e(A*e*w)

View Answer

b) p ∝ e(-A*e*w)

Q5. The tunnelling involves ________.
a) Acceleration of electron in p side
b) Positive slope characteristic of the diode
c) Charge distribution management in both the bands
d) Movement of electrons from the n-side of the conduction band to the p-side of the valance band

View Answer

d) Movement of electrons from the n-side of the conduction band to the p-side of the valance band

Q6. The Tunnel diode is best suited for ______.
a) Amplifiers
b) Oscillators
c) Rectifiers
d) Amplitude limiters

View Answer

a) Amplifiers

Q7. What are the materials used to make the Tunnel diode?
a) AlGaAs
b) AlGaInP
c) ZnTe
d) Silicon and germanium materials

View Answer

d) Silicon and germanium materials

Q8. Which among the following is the reason for the depletion layer of the tunnel diode to be very small?
a) Dopants are high and it is abrupt
b) It’s used at very high-frequency ranges
c) Uses positive conductance property
d) Tunneling effect

View Answer

a) Dopants are high and it is abrupt

Q9. Tunnel diode operates very fast in the ________ region.
a) Gamma frequency region
b) Microwave frequency region
c) Radio frequency region
d) Ultraviolet frequency region

View Answer

b) Microwave frequency region

Q10. The tunnel diode is mainly used ________.
a) To control the power
b) For very high speed of switching
c) For rectification
d) For fact chopping

View Answer

b) For very high speed of switching

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