Practical Examination Details of Class 11 & 12 Electronics (C2) – Everything about it!

As per the revised syllabus of HSC Board Pune, in the year 2000, the marks distribution and format of practical exam is completely changed. This revision was particularly done in order to create better practical skill in the students. या पोस्टचा मराठी अनुवाद वाचण्यासाठी इथे क्लिक करा.

About Class 11 Practical Exam

First we have to see the details of 11th standard electronics practical examination. Generally the teachers take it very lightly. Many colleges do not conduct 11th standard annual practical exam and assure students that they will get full marks of practical in all subjects and will be promoted to 12th standard electronics. But this is a very bad practice! I strongly oppose it and I myself never treated my students like this in my teaching career of 32+ years.

Marking Scheme of Class 11 Annual Practical Exam

The student has to perform any two experiments from Paper-1 and Paper-2, as per the given list. The marks distribution is as follows:

Paper-1 Fundamentals of Electricity

• Marks for actual performance of student in experiment = 25
• Oral Examination (by internal/external examiner) = 05
• Journal (practical record book) = 10 marks
• Project work = 10 marks
• Total marks = 50 marks

Paper-2 Diodes & Semiconductors

• Marks for actual performance of student in experiment = 25
• Oral Examination (by internal/external examiner) = 05
• Journal (practical record book) = 10 marks
• Project work = 10 marks
• Total marks = 50 marks

The distribution of 25 marks for the experiment depends on the question slip provided to the student to perform the practical experiment. One such example is given below. Since the class 11 practical exam is taken on college level, you can prepare your own question papers to conduct the exam.

Important Note: The assessment of practical record book of paper-1 and paper-2 should be done as per following prescribed rules –

1. Total number of experiments actually performed
2. Whether the student has written the details of experiments properly like Name, objectives, circuit diagram, observation table, calculations, specifications of components used in the experiment, conclusion, result, etc.
3. Neatness in writing work, circuit diagrams, accuracy in the readings taken in the experiment, etc.

List of Experiments Class 11 (Paper-1)

1. Study of Thevenin’s theorem
2. Maximum power transfer theorem
3. Study of sinusoidal and non-sinusoidal waveforms on CRO
4. Construction of multirange voltmeter
5. Construction of multirange ammeter
6. Study of multimeter
7. Loading effects of voltmeter
8. Study of resistors
9. Study of capacitors
10. Study of relay
11. Study of switches
12. Study of inductors
13. Construction of bridge rectifier with filter
14. Construction of PCB for AMV using IC 555
15. Construction of CE amplifier on breadboard
16. Study of transformer

List of Experiments Class 11 (Paper-2)

1. Study of resistive characteristics of p-type/n-type semiconductor
2. Forward and reverse characteristics of PN junction diodes
3. Testing of diodes and transistors
4. Study of input-output characteristics of transistor in CE mode
5. Study of FET characteristics
6. Study of UJT characteristics
7. Transistor as a switch
8. Study of photo diode and photo transistor
9. Study of amplification using simple amplifier
10. Measurement of input and output resistance of CE amplifier
11. Study of half wave rectifier circuit
12. Study of full wave rectifier circuit
13. Study of bridge rectifier circuit
14. Study of sinusoidal oscillator
15. Study of burglar alarm using SCR, piezo buzzer and LDR
16. Study of negative and positive feedback
17. Study of equalizer in a amplifier circuit

About Class 12 Practical Exam

Download complete practical booklets of 12th standard electronics, with readings.

This exam is very important and must be conducted by following strict rules of HSC Board. The Board appoints one external examiner who is actually the whole & sole authority to conduct this examination and one internal examiner for the exam. If the college is new and the strength of the students is less and the subject teacher is temporary then the HSC Board appoints the principal or headmaster as the internal examiner of this exam. But since the principal or headmaster is busy in other works, he/she may give full rights to the concerned subject teacher to conduct the examination.

In many colleges I have observed that the students actually do not perform the experiment, as the college does not have the proper laboratory setup and experimental kits, but the students are supplied with readymade experimental sheets with readings and they are asked to write down everything in it in their answer sheet.

That’s all…!

The exam is over…!

But again, I say that this is really a very bad practice!

The student is supposed to perform actual practical experiment, (and also throughout the year), so that he/she will acquire good practical skill. Well that will be another debate to discuss…!

Marking Scheme of Class 12 Annual Practical Exam

The student has to perform any two experiments from Paper-1 and Paper-2, as per the given list. The marks distribution is as follows:

Paper-1 Applied Electronics

• Marks for actual performance of student in experiment = 25
• Oral Examination (by internal/external examiner) = 05
• Journal (practical record book) = 10 marks
• Project work = 10 marks
• Total marks = 50 marks

Paper-2 Digital Electronics

• Marks for actual performance of student in experiment = 25
• Oral Examination (by internal/external examiner) = 05
• Journal (practical record book) = 10 marks
• Project work = 10 marks
• Total marks = 50 marks

The distribution of 25 marks for the experiment must be strictly followed as per the prescribed question slips. You can download the prescribed question slips of HSC Board from following links.

1. HSC Board Question Papers Slips Paper-1
2. HSC Board Question Papers Slips Paper-2

However with the consent of external examiner the internal examiner can change the pattern of questions to perform the practical experiment by the student.

List of Experiments Class 12 (Paper-1)

1. Use of CRO for frequency and phase measurement
2. Zener regulator (Load Regulation)
3. Zener regulator (Line Regulation)
4. LM 317 regulator (Calculations of R1 & R2)
5. LM 317 regulator (Load Regulation)
6. LM 317 regulator (Line Regulation)
7. Photo relay (Assembly of the circuit)
8. Photo relay (Taking voltages to calculate current)
9. Inverting amplifier (AC input voltage, RF = constant)
10. Inverting amplifier (DC input voltage, RF = constant)
11. Inverting amplifier (To plot frequency response curve)
12. Non–inverting amplifier (AC input voltage, RF = constant)
13. Non–inverting amplifier (DC input voltage, RF = constant)
14. Non–inverting amplifier (To plot frequency response curve)
15. Inverting adder using opamp
16. Monostable multivibrator using IC 555 (Assembly & Testing)
17. Astable MV using IC 555 (Frequency measurement on CRO)

List of Experiments Class 12 (Paper-2)

1. Logic gates (Study of basic gates, IC 7404, IC 7408, IC 7432)
2. De Morgan’s theorem (using IC 7404, IC 7408, IC 7432)
3. Universal building blocks (using IC 7400, IC 7402)
4. Boolean equations (using IC 7408, IC 7432)
5. Ex–OR gate (using IC 7404, IC 7408, IC 7432)
6. Ex–OR gate (using IC 7400 & IC 7486)
7. Ex–OR gate (using single IC 7486)
8. Study of RS flip-flop (using IC 7402 & IC 7400)
9. Decoder (with 7-seg display, IC 7447)
10. Decade counter (using IC 7490)
11. Half adder (using IC 7408 & IC 7486)
12. Binary adder (4–bit, using IC 7483)
13. D/A converter (Assembly, testing from 0000 to 1111)
14. D/A converter (Assembly, calculations for output voltage)
15. Diode matrix ROM (Assembly for given data)
16. Determination of noise margin in TTL gates
17. Familiarization with computer

Important Note: For HSC Board Annual Practical Examination also the assessment of practical record book of paper-1 and paper-2 should be done as per following prescribed rules –

1. Total number of experiments actually performed
2. Whether the student has written the details of experiments properly like Name, objectives, circuit diagram, observation table, calculations, specifications of components used in the experiment, conclusion, result, etc.
3. Neatness in writing work, circuit diagrams, accuracy in the readings taken in the experiment, etc.

About Project Work

The project work must be allotted to each and every student individually. In class 11 electronics it is called mini project and in class 12 it is called major project.

The topic of the project must be related to the practical syllabus related to above given experiments list.

It is a good idea to construct experimental kits from students. This will help build up assets for college laboratory by allotting one project of constructing one experimental kit by each student.

The project is generally kept in college after submission by the student, so that the project will serve as the asset to the college to enrich the electronics laboratory.

Download the sample project work (report) – This file is editable MS Word file. You can download and change the content and distribute it to your students to write their own project work report and submit it in college.