TN 11th Question Paper 2026 Basic Electronics Engineering

FOR TN 11TH EXAM PREPARATION

TN 11th 2026
Question Paper · Basic
Electronics
Engineering
EXAM YEAR TYPE SUBJECT

TN 11th 2026 Question Paper Basic Electronics Engineering

Notes · Sample Papers · Previous Year Papers · Mock Tests

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No. of Printed Pages : 7
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!9183IstYearBasicElectronicsEngineering! £vÄ Gs
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Part III — Vocational Subjects
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BASIC ELECTRONICS ENGINEERING

uªÌ ©ØÖ® B[Q» ÁÈ
( / Tamil & English Version )

Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 90

Time Allowed : 3.00 Hours ] [ Maximum Marks : 90

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Instructions : (1) Check the question paper for fairness of printing. If there is any lack of fairness,

inform the Hall Supervisor immediately.

(2) Use Blue or Black ink to write and underline and pencil to draw diagrams.

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Note : (i) Answer all the questions.

(ii) Choose the most appropriate answer from the given four alternatives and write

the option code and the corresponding answer.

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1. Cµsk ªßuøhPÒ öuõh›À CønUP¨£mi¸¢uõÀ, ö©õzu ªßuøh°ß
AÍøÁU PnUQkÁuØPõÚ `zvµ® :
(A) R=R ×R
1
(B) 2
(C) (D)
R=R +R
1 2
R=R +R /R
1 2 1
R=R /R
1 2

Two resistors are connected in series, the total resistance value is calculated by :

(a) R=R ×R (b) R=R +R (c) R=R +R /R (d) R=R /R
1 2 1 2 1 2 1 1 2

2. Cµ\õ¯Ú \Uvø¯ ªß \Uv¯õP ©õØÖ® \õuÚ® __________ BS®.
(A) ªßuøh (B) ªß÷uUQ (C) ªß©õØÔ (D) ªßP»®
A device which converts chemical energy into electrical energy is __________.

(a) Resistor (b) Capacitor (c) Transformer (d) Cell

3. ªßÚq _ØÖPÎÀ £¯ß£k® J¸ ©¢u EÖ¨¦ (Passive Component) __________

BS®.
(A) øh÷¯õk (B) ªßysi (C) FET (D) iµõß]ìhº
_________ is a passive component, which can be used in electronic circuits.

(a) Diode (b) Inductor (c) FET (d) Transistor

4. J¸ AqÂß Gøhø¯ {ºn°¨£x BS®. __________

(A) ¦÷µõmhõß ©ØÖ® {³mµõßPÎß GsoUøP
(B) ¦÷µõmhõßPÎß GsoUøP
(C) G»Umµõß ©ØÖ® ¦÷µõmhõßPÎß GsoUøP
(D) {³mµõßPÎß GsoUøP
The atomic weight of an atom is determined by __________.

(a) Number of Protons and Number of neutrons

(b) Number of protons

(c) Number of Protons and Number of electrons

(d) Number of neutrons

5. iµõß]ìh›À EÒÍ AkUSPÎß GsoUøP __________ BS®.
(A) ‰ßÖ (B) JßÖ (C) |õßS (D) Cµsk
The number of layers in a transistor is __________.

(a) Three (b) One (c) Four (d) Two

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 2 of 8

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6. J¸[Qøn¢u _ØÔÀ Pmhø©UP •i¯õu ªß\õuÚ®
(IC) BS®. __________

(A) ªß÷uUQ (B) _¸Ò (C) iµõß]ìhº (D) ªßuøh
(Coil)

___________ is an electric device which cannot be constructed in an IC.

(a) Capacitor (b) Coil (c) Transistor (d) Resistor

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(Saturated) (Stable)

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(C) §›u{ø»¯ØÓuõP (D) {ø»¯ØÓuõP
(Unsaturated) (Unstable)

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Astable multivibrator is ________ in any state.

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Saturated (b) Stable

(c) Unsaturated (d) Unstable

8. vµÁ¨ £iP Põm]z vøµ HØS® ªß\Uv AÍÁõÚx
(LCD) BS®. __________

(A) AvP® (B) ªPU SøÓÄ (C) ªP AvP® (D) SøÓÄ
The power consumption of LCD is ________.

(a) High (b) Very low (c) Very high (d) Low

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(A) Gmk (B) JßÖ (C) £zx
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The number of levels in a digital signal is _________.

(a) Eight (b) One
a (c) Ten (d) Two

10. ¤ßÁ¸ÁÚÁØÖÒ ö£õ¸¢uõu JßøÓ GÊuÄ®.
(A) Q÷»õÁõm (B) ¤m (C) ö©Põø£m (D) ø£m
Choose the odd one :

(a) kilowatt (b) Bit (c) Megabyte (d) Byte

11. J¨¦ø© \ªUøbUPõÚ Euõµn® __________ BS®.
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a __________ is the example of an analog signal.

(a) Sinusoidal wave

(b) Square wave

(c) Triangular wave

(d) Rectangular wave

[ v¸¨¦P / Turn over

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12. £¯Úº ©ØÖ® Áßö£õ¸Ò Cøh÷¯¯õÚ Cøh•P® __________ BS®.
(A) ALU (B) CPU (C) CU (D) OS

________ is an interface between the user and the hardware.

(a) ALU (b) CPU (c) CU (d) OS

13. PoÛ°À G¢u SÔ±mhõÀ J¸ ÷Põ¨¤ß A\À ußø© ©ØÓ {µÀPÐUS®
|P»õQÓx ?
(A) |a_ {µÀ (B) Áõº® (C) Gvº |a_{µÀ (D) {µÀ
A computer _________ is a malicious code which self–replicates by copying itself to other

programs.

(a) Virus (b) Worm (c) Antivirus (d) Program

14. ¤ßÁ¸ÁÚÁØÖÒ ""HØ÷£õº ÁøP'' P»¨¦ uÛ©® Gx ?
(A) Bºö\ÛU (B) Bsi©Û (C) £õ죵ì (D) ÷£õµõß
Which of the following is acceptor impurity element ?

(a) Arsenic (b) Antimony (c) Phosphorous (d) Boron

15. J¸ Aøµ¯ÍÁõÚ (Quasi) ©õÓõu {ø» ö£ØÖÒÍ ªß_ØÖ __________ .
(A) ‰ßÖ ©õÓõu {ø»a _ØÖ
(B) C¸{ø» £ßø© AvºÂ _ØÖ
(C) ‰ßÖ {ø»a _ØÖ
(D) J¸{ø» £ßø© AvºÂ _ØÖ
Circuit which consists of a quasi-stable state is called ________.

(a) Tristable circuit

(b) Bistable multivibrator circuit

(c) Tristate circuit

(d) Monostable multivibrator circuit

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 4 of 8

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£Sv & II / PART - II

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28 10x3=30

Note : Answer any ten questions. Question No. 28 is Compulsory.

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16. ›ÁõUP® GÊuÄ®.
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(i) NTC

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(ii) PTC (iii) PCB

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Write the expansion for :

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(i)

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NTC (ii) PTC (iii) PCB

17. BØÓÀ ©õØÔPÒ GßÓõÀ GßÚ ?
What is meant by transducers ?

18. ]¼Põß AqÂß Aø©¨ø£ Áøµ¯Ä®.

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Draw the atomic structure of Silicon atom.

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19. HÊ xsk LED •øÓ°À Gs 8

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GÆÁõÖ Põs¤UP¨£k® Gߣøu GÊuÄ®.

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How will you display number 8 in seven segment LED display ?

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20. ö£¸UQ GßÓõÀ GßÚ ?
What is meant by amplifier ?

21. Aø»¯õUQ Gߣx GßÚ ? Auß ÁøPPøÍ GÊuÄ®.
What is an oscillator ? Write its types.

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C¸{ø» SÔ±kPÎß ö£¯ºPøÍ GÊuÄ®.
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Write the names of binary code.

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Give few adventages of LED.

24. •ÔÄ ªßÚÊzu® øh÷¯õiÀ GÆÁõÖ HØ£kQÓx ? ÂÍUPÄ®.
How breakdown voltage happens in a diode ? Explain.

[ v¸¨¦P / Turn over

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25. Áøµ¯ÖUPÄ® : ø©U÷µõL\õ¨m Âs÷hõì
Define Microsoft Windows.

26. PmkÓõ G»UmµõßPÒ GßÓõÀ GßÚ ?
What are free electrons ?

27. Cøn¯zvß |ßø©PÒ ¯õøÁ ?
What are the advantages of Internet ?

28. PoÛ°ß EÒÏmk \õuÚ[PÒ ‰ßÔß ö£¯ºPøÍ GÊuÄ®.
Write the names of three input devices of a computer.

£Sv & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® I¢x ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs &US 35

Pmhõ¯©õP Âøh¯ÎUP ÷Ásk®. ÷uøÁ¯õÚ Ch[PÎÀ £h® Áøµ¯Ä®.
Note : Answer any five questions. Question No. 35 is Compulsory. Draw diagrams wherever

necessary. 5x5=25

29. P›© ªßuøh (Carbon resistor) £ØÔ £hzxhß ÂÍUPÄ®.
Draw and explain about carbon resistors.

30. ªß©õØÔ ÁøPPÎÀ H÷uÝ® CµsiøÚ¨ £ØÔ ÂÍUPÄ®.
Explain any two types of transformers.

31. I.]. &°ß |ßø©PøÍ ÂÍUPÄ®.
Explain the advantages of an IC.

32. ö\¯À•øÓ Ai¨£øh°À C¯UP •øÓø©°ß ÁøPPøÍ ÂÍUPÄ®.
Explain the types of operating system based on process capability.

33. uµÄ £›©õØÖ •øÓPÐUS Cøh÷¯¯õÚ ÷ÁÖ£õkPøÍ ÂÍUPÄ®.
Explain the difference between the data transmission modes.

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 6 of 8

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34. ROM, RAM ö\¯À£õmøh ÂÍUSP.
Explain the working of ROM and RAM.

35. ©õÖvø\ ªß\õµzøu (AC) ÷|ºvø\ ªß\õµ©õP (DC) ©õØÖ® v¸zva _ØÔß
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Draw the circuit diagram of rectifier which converts Alternating Current into Direct Current.

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SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
Áøµ¯Ä®. 2x10=20

Note : Answer all the questions. Draw diagrams wherever necessary.

36. (A) ªßuøh°ß ÁsnU SÔ±øh AmhÁøn¨£kzv C¸ Euõµnzxhß
ÂÍUPÄ®.
AÀ»x
(B) \¢v°ß Aø©¨ø£ £h® Áøµ¢x ÂÍUPÄ®.
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(a) Explain colour coding chart of resistor with two examples.

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Explain the formation of PN junction with a neat diagram.

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37. (A) C¸{ø» £ßø© AvºÂ Pmhø©¨¦ ©ØÖ® ÷Áø» ö\´²® Âuzøu
ªß_ØÖ £hzxhß ÂÁ›UPÄ®.
AÀ»x
(B) PoÛ ø©¯a ö\¯»Pzvß Pmh¨£h® Áøµ¢x ö\¯À£õmiøÚ ÂÍUPÄ®.
(a) Describe the construction and working principle of bistable multivibrator with

neat circuit diagram.

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OR

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(b) Explain the working of Central Processing Unit (CPU) with a neat diagram.

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