Solapur University M.Sc Electronic Science Sem I Paper March 2019
Solapur University M.Sc Electronic Science Previous Year Question Paper 2019 (March-April) on Semiconductor Devices
M.SC.(SEMESTER I )(CBCS)Examination March/April-2019
Electronic Science
SEMICONDUCTOR DEVICES
| 1 | Which of the following compound or element used in lasers?
a) Si b) lnP c) GaAs d) All of the above |
| 2 | Packing fraction of BCC is _______
a) 74% b) 68 c) 52% d) 34% |
| 3 | RTP is________.
a) reactive thermal processing b) rediative thermal process c) rapid thermal processing d) radiative thin photolithography |
| 4 | An evaporation of the elements in a vacuum is________
a) The chemical vapor deposition b) the liquid-phase epitaxy c) molecular beam epitaxy d) doping |
| 5 | Electromagnetic spectrum wavelength of germanium is_____
a) 100-1100 b) 400-1700 c) 800-2000 d) 1000-2800 |
| 6 | Drift and diffusion of holes are in ______.
a) opposite direction b) the direction of electric field c) same direction d) both b and c |
| 7 | In the CZochralski process a seed crystal is used at one end in order, to______.
a) start the growth of Si b) avoid roughness of ingot c) reduce impurity d) increase diameter of ingot |
| 8 | Junction between dissimilar semiconductors is________.
a) homo junction b) Hetro junction c) both homo and hetero junction d) junction tail |
| 9 | MODFET is also referred to as______.
a) 2-DEG FET b) HEMT c) TEGFET d) all of the above |
| 10 | JFET IS______
a) current controlled device b) voltage controlled device c) both current and voltage controlled device d) none of the above |
| 11 | The major source of noise is random thermal motion of the carriers, leading to fluctuations in the dark current called_______
a) Johnson noise b) shot noise c) NEP d) avalanche noise |
| 12 | Effective mass m* is inversely proportional to the________.
a) planks constant b) frequency of radiation c) electron momentum d) curvature of the E-k curve |
| 13 | _________pentavalant impurity.
a) Antimony b) Arsenic c) Phosphorous d) All of the above |
| Data Collected By – J. Jayalakshmi | |
| Published On – 30th Nov 2021 | |
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