Analog Electronics - I Internal Test

Analog Electronics - 4BPH5C1
 I Internal Test
Time : 2 Hrs                                                                                                                           Marks: 40

                                                                        PART - A                                                        5 x 2 = 10

1.What are extrinsic semiconductors?
2.What is a crystal diode? 
3.Define ripple factor. 
4.Define current gain of a transistor in CC mode.
5.Define operating point of a transistor.

                                                                       PART - B                                                      2 x 5 = 10

1. Describe the working of a Zener voltage regulator.
2. Derive relation between alpha and beta.


                                                                         PART - C                                                     2 x 10 = 20

1.Describe the working of a full wave bridge rectifier.
2.Write an essay on load line analysis of transistor circuits.

Optics and Spectroscopy - I Internal Test

Optics and Spectroscopy - 7BPH3C1
 I Internal Test
Time : 2 Hrs                                                                                                                           Marks: 40

                                                                        PART - A                                                        5 x 2 = 10

1. Write short note on chromatic aberration in lenses.
2. Define dispersive power of a material.
3. What is an achromatic doublet?
4. State Stoke's Law.
5. What is an air wedge?

                                                                       PART - B                                                      2 x 5 = 10

1. Derive the condition for the minimization of Spherical Aberration when two thin lenses are separated by a distance.
2. Explain how colors appear in thin films due to interference.


                                                                         PART - C                                                     2 x 10 = 20

1. Explain the construction, action and working of Ramsden and Huygens Eyepieces with neat diagrams. Also indicate the position of cardinal points for these eyepieces.
2. Explain the construction of Michelson Interferometer. How the wavelength of monochromatic light can be measured?

Theory of Rainbow - Notes








ALAGAPPA UNIVERSITY UG-SCIENCE AFFILIATED COLLEGES RESULT - APRIL 2017

Click HERE  to Visit
ALAGAPPA UNIVERSITY UG-SCIENCE AFFILIATED COLLEGES RESULT - APRIL 2017 Page

Analog Electronics - Syllabus


III YEAR – V SEMESTER
COURSE CODE: 4BPH5C1

CORE COURSE IX – ANALOG ELECTRONICS

Unit I    SEMICONDUCTOR DIODES AND REGULATED POWER SUPPLIES
Semiconductor diode – Crystal diode – Rectifiers – Half and full – Wave rectifiers – Bridge rectifier– Efficiency – Ripple factor – Filter circuits.
Zener diode – characteristics – Voltage regulator – Regulated power supply – Problems.

Unit II   TRANSISTORS AND TRANSISTOR BIASING
Transistor action – CB, CE & CC modes – Comparison – Amplifier in CE arrangement – Load line analysis – Cut – off and Saturation – Power rating – Application of CB amplifier.
Transistor biasing – Various methods of transistor biasing: base resistor, feedback resistor, voltage divider methods – Hybrid parameters – Determination of h parameters – Analysis of a transistor CE amplifier using h parameters.

Unit III  AMPLIFIERS – SINGLE STAGE & MULTISTAGE
Single stage amplifier – Phase reversal – DC & AC equivalent circuits – Load line analysis – Voltage gain – Classification of amplifiers – Input impedance of an amplifier.
Multistage transistor amplifier – RC, transformer, direct coupled amplifiers – Comparison of different types of amplifiers.

Unit IV  AUDIO AMPLIFIERS AND OSCILLATORS
Transistor audio power amplifier – Difference between voltage and power amplifiers – Performance quantities of power amplifiers – Classification of power amplifiers – Expression for collector efficiency – Class A amplifier – Push – Pull amplifier – Heat sink.
Feedback principle – Negative and positive feedback – Current gain with negative feedback – Emitter follower – DC analysis – Types of oscillations – Undamped oscillations – Colpitt, Hartley, Phaseshift Oscillator.

Unit V    OP AMPS
OP AMP: characteristics, OP AMP biasing – Non – inverting & Inverting amplifiers – Applications of OPAMP – adder, subtractor, differentiator, integrator – waveforms study, scale changer and sign changer – Instrumentation amplifier – Voltage level detector.
OP AMP signal generators: Phase shift, Colpitts', Hartley, Square wave and triangular wave generators.

Books for Study

1. V.K.Mehta, Principles of Electronics, S.Chand & Co Ltd.,10th Edition 2007.
2. R.S.Sedha – Text Book of Applied Electronics, S.Chand & Co Ltd., II Edition 2004.

Books for Reference

1. B.L. Theraja – Basic Electronics – S. Chand & Co, V Edition 2009.
2. Malvino & Leach – Transistor Approximations – International Publication – 2000.

Syllabus for Optics and Spectroscopy - 2018 ODD SEM


II YEAR – III SEMESTER
COURSE CODE: 7BPH3C1

CORE COURSE VI – OPTICS AND SPECTROSCOPY

Unit I              GEOMETRICAL OPTICS

Lens – Spherical aberration in lenses – Methods of minimizing spherical aberration – chromatic aberration in lenses – condition for achromatism of two thin lenses (in and out of contact) – Coma - Aplanatic lens – Eyepieces – Ramsden’s and Huygens’s eyepieces.  Dispersion – Angular and Chromatic dispersion – combination of prisms to produce i)dispersion without deviation ii) deviation without dispersion – Cauchy’s dispersion formula– Direct vision spectroscope – Theory of formation of rainbow.

Unit II             INTERFERENCE

Conditions for interference – colours of thin films – Air wedge – theory – determination of diameter of a thin wire by Air wedge – test for optical flatness – Newton’s rings – Determination of refractive index of a liquid.  Michelson’s Interferometer – theory and its Application (Measurement of wavelength and difference between wavelength of two close lines, thickness of mica sheet) – Jamin’s interferometers – determination of refractive index of gases

Unit III           DIFFRACTION

Fresnel’s  diffraction –Rectilinear propagation of light – zone plate –diffraction at circular aperture – opaque circular disc – Fraunhofer  diffraction at single slit – Double slit – Plane diffraction grating – theory and experiment to determine wavelength – overlapping of spectral lines. Rayleigh’s criterion for resolution – resolving power – resolving power of grating – resolving power of a prism.

Unit IV           POLARISATION

Double refraction – Huygens’s explanation of double refraction in uni axial crystals – Nicol Prism – Nicol Prism as polarizer  and analyzer – Polaroids and their uses – Quarter wave plates and Half wave plates.  Plane, elliptically and circularly polarized light – Production and detection – Optical activity– Fresnel’s explanation of optical activity – Specific rotatory power – determination using Laurent’s half shade polarimeter.

Unit V             SPECTROSCOPY

Microwave and infrared Spectroscopy – Rotation of molecules – Rotational Spectra – The  rigid  diatomic molecules, selection rules – the intensities of spectral lines – Infrared spectroscopy (outlines only) – Raman Spectroscopy – Quantum theory of Raman effect – Classical theory of Raman effect – Molecular Polarisability – pure rotational Raman spectra of linear molecules – vibrational Raman spectra – Applications.


Text Books:

  1. Optics and Spectroscopy –     R.Murugeshan, S. Chand and co., 6th Edition, New Delhi, 2008.
  2. A text book of Optics – Subramanyam and Brijlal, S. Chand and co.., 22nd  Edition, New Delhi 2004.
  3. Elements of Spectroscopy – S.L. Gupta, V.Kumar and R.C.Sharma Pragati Prakashan, 13th Edition, Meerut, 1997

Books for Reference:

  1. Optics –  Sathyaprakash, Ratan  Prakashan Mandhir, VIIth Edition,  New Delhi, 1990.
  2. Introduction to Molecular Spectroscopy –C.N.Banewell,TMH publishing co. IV Edition,  New Delhi, 2006.
  3.  Molecular structure and spectroscopy – G.Aruldhass, PHI Pvt Ltd, , II Edition, New Delhi, 2007.

Zeeman Effect










Zeeman Effect - Larmor Theorem Notes

Click HERE to download Zeeman Effect notes as PDF

Fundamentals of Nanoscience – 4BPHE3C Model Question

Department of Physics - Dr.Zahir Husain College, Ilyangudi.
Fundamentals of Nanoscience – 4BPHE3C

Time: 3 Hours                                                                                 Max Marks: 75

   Part – A                     (10 x 2 = 20)
Answer All the Questions

  1. Define Nanotechnology
  2. How surface to volume ratio is affected by the size of nanoparticles.
  3. Define CNT’s.
  4. Give any two applications of CNT’s.
5.    Define the top down approach.
6.    Write the advantage of CVD method.    
7.    List out advantages of Scanning tunneling microscopy.
8.    State the fundamental principle of transmission electron microscopy.
9.   Give the advantage of blue ray disk over ordinary compact disk.
10.  List any two applications of nanoparticles.
   Part – B                     (5 x 5 = 25)
Answer All the Questions

11.  Write note on nanomaterials.
(OR)

       What are nanowires? List out their properties.
  1. Describe the difference between SWCNT and MWCNT.
(OR)
Describe the plasma arc discharge synthesis technique for production of CNT.

13. Explain the lithography method for nanomaterial synthesis.
     (OR)
            Write note on self assembly method.
     
  1.  Describe the instrumentation of scanning probe microscopy.
(OR)
            Explain the working of AFM.
       15. Compare various types of optical memories.
                                                                                 (OR)
           
            Briefly describe nanomaterial applications in biomedical field.

   Part – C                     (3 x 10 = 30)
Answer any three Questions

  1. Describe various methods of nanomaterial synthesis.


  1. Describe the types of carbon nano tubes.


  1. Describe the sol-gel method for nanomaterial synthesis.


  1. Explain the principle and working of STM.


  1. Write an essay on nanolayer applications.


Atomic And Nuclear Physics –4BPH4C1 Model Question

Department of Physics - Dr.Zakir Husain College, Ilayangudi.
Atomic And Nuclear Physics –4BPH4C1

Time: 3 Hours Max Marks: 75

   Part – A (10 x 2 = 20)
Answer All the Questions

1. Define critical potential.
2. Write note on photoelectric cell.
3. Give Pauli’s exclusion principle.
4. What is anomalous Zeeman Effect?
5. State Mosley’s Law.
6. Define Miller Indices.
7. What are the limitations of cyclotron?
8.    Define Half Life.
9. Write note on Van Allen Belts.
10. What are Baryons?
   Part – B (5 x 5 = 25)
Answer All the Questions

11. Discuss Aston’s mass spectrograph and explain how isotopes are detected.
(OR)
Explain the theory of determining e/m of photoelectron using Lenard’s method.

12. Explain the various quantum numbers associated with the vector atom model..
(OR)
Explain emission of D2 lines in sodium spectrum using term symbols and selection rules.

13.  State and derive Bragg’s law. Explain the working of Bragg spectrometer.
     (OR)
        Draw NaCl structure and discuss it.
   
14. Explain how electrons are accelerated to very high energy by betatron.
(OR)
        Write a note on thermo nuclear reactions
 15. Discuss the method of radio carbon dating.
                                                        (OR)
Explain latitude effect in cosmic rays.


   Part – C (3 x 10 = 30)
Answer any three Questions

16. Explain Frank and Hertz Experiment to determine critical potential.


17. Describe Stern and Gerlach experiment and indicate the importance of the results obtained.


18. Describe the quantum treatment of normal Zeeman Effect.


19. What is Betatron? Explain the theory and working of Betatron.


20. What are cosmic ray showers? Discuss the theory of their formation.

Subscribe to: Posts (Atom)