Electronic Devices and Circuits
Previous year question paper with solutions for Electronic Devices and Circuits from 2015 to 2016
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SECTION-A
CONDUCTING MATERIALS:
Review of energy bands, description of materials, drift velocity, collision time, Mean free path, mobility,
conductivity, relaxation time, factors affecting conductivity of materials, types of thermal conductivity,
Wiedmann-Franz law, super conductivity, effect of magnetic field, conducting materials, applications.
SECTION-B
SEMICONDUCTORS, CONSTRUCTION AND CHARACTERISTICS OF DEVICES:
Review of Si and Ge as semiconducting materials, Continuity Equation, P-N junction, Drift & Diffusion,
Diffusion & Transition capacitances of P-N junction.
Brief introduction to Planar Technology for device fabrication. metal -semiconductor junctions (ohmic and
non-ohmic), breakdown mechanisms in p-n junction, zener diode, electrical and optical excitation in diodes,
LED, solar cells and photo-detectors. And characteristics.
SECTION-C
Transistors: Metal-semiconductor-field-effect-transistors (MESFET), Metal-insulator-semiconductor-fieldeffect-transistors
(MISFET), Metal oxide semiconductor field effect transistor (MOSFET): Construction,
Operation and characteristics of above devices.
Bipolar junction transistors: Fundamentals of BJT operation, amplification with BJTs,
SECTION –D
SOME SPECIAL DEVICES:
Photodiodes, photo detectors, solar cell, light emitting diodes, semiconductor lasers, light emitting materials.
Tunnel Diode: degenerate semiconductors, IMPATT diode; The transferred electron mechanism: The
GUNN diode.P-N-P-N diode, semiconductor controlled rectifier (SCR), bilateral devices: DIAC, TRIAC,
IGBT
PTU
PU
- BCOM |
- BA/BSC |
- BCA |
- MA |
- PGDCA |
- MCOM |
- MSC-Math |
- Addon |
- BBA |
- B-ARCH |
- B-LIB |
- B-EDU |
- B-PHAR |
- BA-HONS-ECON |
- BA-HONS-SS |
- BE |
- MA-Punjabi |
- MA-English |
- MA-History |
- MCA |
- MBA |
- MBA-CIT |
- MBA-Executive |
- MCOM-AF |
- MCOM-BE |
- MCOM-BI |
- MCOM-MEFB |
- BSC-Agri |
- BSC-FD |
- BSC-HS |
- ME-CSE |
- ME-IT |
- ME-ME |
- ME-ECE |
- MSC-Chemistry |
- MSC-Physics |
- MSC-Botany |
- MSC-Zoology |
- MA-Economics |
- MA-Hindi |
- LLB |
- BPED |
- LLM |
- BFA |
- B. Voc |
- BHM |
- BTM |
- M. Arch |
- M. Pharm |
- MFA |
- MTM |
- MHM |
- M.ED |
- M-Lib |
- MPED |
- MFDM |
- MGL |
- Shastri |
- M.TECH |
- ME-CHEMICAL |
- ME-FT |
- ME-ELECTRIC |
- M.TECH-ME |
- M.TECH-NN |
- M.E-BIO |
PU-PATIALA
- BCA |
- BBA |
- MBA |
- MCOM |
- BCOM |
- BCOM-HONS |
- BSC-NM |
- BA |
- B.EDU |
- BSC-AGRI |
- BA-B.EDU |
- BLIB |
- MSC-IT |
- PGDCA |
- MSC-MB |
- MSC-physics |
- BA-ENGLISH |
- MA-Punjabi |
- MSC-chemistry |
- MSC-maths |
- BSC-Medical |
- MSC-FDT |
- MSC-FN |
- MSC-BT |
- BSC-Hons-BT |
- BSC-CS |
- BSC-Hons-Math |
- BSC-CSM |
- BSC-FT |
HPTSB
- Diploma |