ELECTRONICS TECHNOLOGY CLASS XII
1 2 3 4 5
S.No. Subject Periods/ Week Examination Total
Theory, Prac. Total Theory Prac. Marks
Marks: Hrs. Marks: Hrs.
1. Language I 7 - 7 100 3 - - 100
2 Language II or 7 - 7 100 3 - - 100
Mathematics (041)
3. General Foundation 4 1 5 80 3 20 3 100
Course
4. Vocational Elective Papers
I. Electronic Devices 3 5 8 40 3 60 3 100
and Circuits
II. Radio Engg. & 3 5 8 40 3 60 3 100
Audio System
III. Television and 3 5 8 40 3 60 3 100
Video Systems
5. Physical & Health - - 2 - - -
Education
Additional (optional) Papers
I. Electrical Engg. 3 2 5 60 3 40 3 100
II. Digital Electronics 3 2 5 60 3 40 3 100
& Microprocessors
III. Chemistry (043) 6 2 8 70 3 30 3 100
As per Academic Stream
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GENERAL FOUNDATION COURSE
3 Hours Class XII Marks: 100
Part I: (Compulsory to all vocational courses) (50 marks)
A. BUSINESS MANAGEMENT AND ENTREPRENEURSHIP (30 marks)
Management of Business
Elementary treatment/ exposure to basic conceptual framework of the topics listed below:-
i) Basic functions 6
ii) Marketing management 6
iii) Financial management 6
iv) Production management 6
v) Personnel management 6
B. COMPUTATIONAL SKILLS (10 marks)
1. (a) Solution of linear equations and their applications to problems of commercial
mathematics. 5
(b) System of linear equations and inequation in two variables. Applications in
formulation of simple linear programming problems.
2. Statistics: Raw data, bar charts & histogram; frequency tables; frequency polygon;
ogive; mean, median and mode of ungrouped and grouped data; standard
deviation; introduction to mortality tables, price index etc; introduction to
computers. 5
C. ENVIRONMENTAL EDUCATION & RURAL DEVELOPMENT (10 marks)
I. Environmental Education 5
a) Modernisation of agriculture and environment: irrigation, Waterlogging, use
of fertilizers, pesticides, soil erosion, land degradation (desertification &
deforestation), silting and drying of water resources.
b) Rational utilization, conservation and regeneration of environmental
resources (soil, air, water, plant energy, minerals).
II. Rural Development 5
Principles and goals of rural development, major problems/constraints in rural
development in India.
Part II: APPLIED PHYSICS Marks: 30
1. Units & Dimenstions: M.K.S. Fundamental & Derived units, S.I. base units,
supplementary units and Derived units. Dimensions of various physical quantities, uses of
Dimensional analysis. 2
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2. Surface Tension and Viscosity: Molecular forces, Molecular theory of surface Tension,
surface energy, capillary action, concept of viscosity, coefficient of viscosity, principle and
construction of viscometers. 2
3. Vibrations: Vibration of simple spring mass system, elementary and qualitative
concept of free and forced vibrations, resonance, Effects of vibrations on building. bridges and
machine members. 3
4. Heat: Temperature and its measurement, thermoelectric, platinum resistance
thermometers and Pyrometers. Conduction through compound media and laws of
Radiations. 3
5. Ultrasonics: Production of Ultrasonic waves by magnetostriction and piezo-electric
effect, application of ultrasonics in industry. 3
6. Optics: Nature of light, reflection and refraction of a wave from a plane surface.
Overhead projector and Epidiascope. 3
7. Electrostatics: Coloumb's Law, Electric field, potential, electric flux, Gauss theorem
and the electric field around a charged sphere, a long straight conductor and plane charged
sheet, potential difference, and potential of a charged sphere and a point charge, principle of
capacitor, capacitance of a parallel plate capacitor having a number of media, energy stored in
capacitor and combination of capacitor. 4
8. Electromapetism: Magnetic field around a current carrying conductor and its
direction, concept of B & H and permeability, force experienced by a moving charge and
current carrying conductor placed in a magnetic field. Magnetic field at the centre of a circular
coil, straight conductor and solenoid. 4
9. Nuclear Physics: Nuclear fission and fusion, use of radio isotopes, the application of
nuclear fission in nuclear power station, nuclear fuels, radiation hazard. 3
10. Basic Electronics: Semi conductors and their resistivity. Atomic structure of Ge & Si,
P & N type materials, formation of P-N and N-P junctions, forward and backward biasing,
working of semiconductor diode, and its application in half wave and full wave rectifiers, P-N-
P and N-P-N transistors and their principles of working. 3
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PRACTICAL
APPLIED PHYSICS 3 Hours Marks: 20
1. To determine the surface tension of a liquid by rise in capillary.
2. To determine the viscosity of a given liquid.
3. To determine the frequency of Tuning fork using a sonometer.
4. To determine the frequency of AC main using sonometer.
5. Draw forward and reverse characteristics of P & N junctions.
6. To find resistivity of a given metal by using Meter-bridge.
7. To compare e.m.fs of two cells by using a potentiometer.
8. To determine `K' of a bad conductor.
9. To determine `K' of a good conductor.
10. Time-period of a cantilever.
150
ELECTIVE I
ELECTRONIC DEVICES AND CIRCUITS
3 Hours Class XII Marks: 40
Theory
1. Single Stage Transistor Amplifier 6
(1) Single stage CE amplifier circuit with proper biasing components; A.C. load line
and its use in explanation of phase reversal of the output voltage with respect to the
input voltage.
(2) Transistor hybrid, low frequency model in CE configuration. `h' parameters and
their physics significance, typical values of the parameters.
(3) Expressions for voltage gain, current gain, input and output impedance for a single
stage CE amplifier circuit in terms of `h' parameters.
2. Multistage Transistor Amplifier: 5
(1) Need of multistage amplifier.
(2) Working of RC coupled and transformer coupled multistage amplifier.
(3) Frequency response for RC coupled and transformer coupled amplifiers and their
physical explanation. Definition and physical significance of the terms band width,
upper and lower cross over frequencies.
(4) Direct coupled amplifier and its limitation;
3. Transistor Audio Power Amplifiers 6
(1) Difference between voltage and power amplifier Importance of impedance
matching in power amplifier. Definition of collector efficiency of power amplifier.
(2) Typical single ended power amplifier and its working. Graphical method of
calculation of the output of amplifier. Importance of heat sinks. Classification of
amplifiers-class A, class B and class C, collector efficiency and distortion-in Class
A, B and C amplifiers (without derivation).
(3) Working principle of push pull amplifier. Its advantages over single ended power
amplifier. Driver stages for push pull amplifier circuit.
(4) Working principle of complementary symmetry push pull amplifier circuit and its
advantages.
(5) Transformerless audio power amplifiers and their typical applications.
4. Feed Back in Amplifiers 5
(1) Basic principles and types of feedback.
(2) Derivation of expression for the gain of an amplifier employing feedback.
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(3) Effect of negative feedback on gain stability, distortion and band width (only
physical explanation).
(4) Typical feedback circuits:
(a) RC coupled amplifier with emitter by pass capacitor removed.
(b) Emitter follower and its applications (No derivation)
5. Tuned Voltage Amplifiers 4
(1) Classification of amplifiers on the basis of frequency.
(2) Series and parallel resonant circuits. Expression for resonant frequency.
Expressions for impedance at resonance (No derivation). Relationship between
resonant frequency, Q and bandwidth (No derivation).
(3) Single and double tuned amplifiers; their working principles and frequency
response (No derivation).
6. Sinusoidal Oscillators 6
(1) Applications of oscillators
(2) Use of positive feedback/negative resistance of generation of oscillations.
Barkhausen criterion for oscillations.
(3) Different oscillator circuits-Tuned collector, Hartley, Colpitt's phase shift, wein
bridge and crystal oscillators and their working principles (No mathematical
derivation).
7. Multivibrators 4
1) Transistor as a switch.
2) Collector coupled astable, monostable and bistable multivibrator circuits, their
working principles and applications (No derivation)
8. Integrated Circuits 4
1) Importance of I.C.s in modem Electronics.
2) Difference between linear and-Digital I.C.s
3) Some examples of I.C
4) Difference between SSI, MSI, LST & VLSI.
5) Mention of different I.C. packages.
PRACTICAL
ELECTRONIC DEVICES AND CIRCUITS 3 Hours Marks: 60
1. To plot the frequency response of single stage common emitter amplifier.
2. To plot the frequency response of it two stage RC coupled amplifier and compare it with that of the single stage amplifier.
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3. To measure the optimum load, maximum undistorted power (by giving maximum allowable signall and efficiency of a single ended power amplifier.
4. To measure the optimum load, maximum undistorted power and efficiency of a push pull amplifier.
5. To plot the frequencey response of an RC coupled amplifier with negative feedback.
6. To measure the voltage gain, input impedance and output impedance of an emitter follower.
7. To plot the frequency response of a tuned amplifier.
8. To measure the frequency of the given sidusoidal oscillator.
9. To observe the waveshopes at the collector and base in the given astable multivibrator circuit.
List of Experiments:
1. To plot the frequency response of single stage common emitter amplifier.
2. To plot the frequency response of a two stage RC coupled amplifier and compare it with that of the single stage amplifier.
3. To measure the optimum load, maximum undistorted power (by giving maximum allowable signal) and efficiency of a single ended power amplifier.
4. To measure the optimum load, maximum power and efficiency of a push pull amplifier.
5. To plot the frequency response of an RC coupled amplifier with negative feedback.
6. To measure the voltage gain, input impedence and output impedence of an emiter follower.
7. To plot the frequency response of a tuned amplifier.
8. To measure the frequency of the given sidusoidal oscillator.
9. To observe the waveshapes at the collector and base in the given astable multivibrator circuit.
Note Each student should perform all the experiments during the session.
MARKING SCHEME Marks: 60
Note: 1. Marks for sessional work will be awarded by the teacher concerned.
2. Students may be asked to perform any one experiments.
DISTRIBUTION OF MARKS
1. Experiment 40 Marks
(i) Circuit relevant diagram 4
(ii) Experimental set up/handling of appamtus 6
(iii) Observations 12
(iv) Interpretation/graph 12
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(v) Result 2
(vi) Precautions 4
2. Viva Voce 10 Marks
(i) Questions related to the experiment assigned 3
(ii) Questions related to the remaining experiments 4
(iii) Questions based on related concepts 3
3. Sessional Work 10 Marks
(i) All listed experiments performed 5
(ii) Maintenance of proper record 5
GUIDELINES FOR EXAMINERS 1. Examiner should check up atleast one result of the examinee.
2. As far as possible each examinee should be given separate experiment.