MH SET 2020 Paper 2 Electronics Science Question Paper (27-Dec-2020)

Question 1

Which of the following is not a semiconductor ?

Accepted Answer

Indium

Answer

Galium Arsenide

Answer

Germanium

Answer

Silicon

Question 2

In the case of N-type germanium semiconductor the energy required to detach fifth electron from the donor atom is :

Accepted Answer

0.01 eV

Answer

0.05 eV

Answer

0.25 eV

Answer

0.70 eV

Question 3

P-side of a semiconductor diode is applied a potential of 0.5 V whereas the N-side is applied a potential of –1.0 V. The diode shall :

Accepted Answer

Conduct

Answer

Conduct partially

Answer

Not conduct

Answer

Breakdown

Question 4

A semiconductor is irradiated with light such that carriers are uniformly generated throughout its volume. The semiconductor is N-type with ND = 1019/cm3. If the excess electron concentration in the steady state is &Delta;n = 1015/cm2 and if &tau;p = 10 µs C minority carrier life time, then what is the generation rate due to irradiation ?

Accepted Answer

1020 e-h pairs/cm3/s

Answer

1014 e-h pairs/cm3/s

Answer

1010 e-h pairs/cm3/s

Answer

108 e-h pairs/cm2/s

Question 5

Compared to BJT, a JFET has :

Accepted Answer

Higher input impedance and low voltage gain

Answer

Lower input impedance

Answer

Higher voltage gain

Answer

Higher input impedance and high voltage gain

MH SET 2020 Paper 2 Electronics Science Question Paper (27-Dec-2020)

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