TN 11th Question Paper 2025 Basic Electronics Engineering

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8478
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Part III — Vocational Subjects

Ai¨£øh ªßÚq ö£õÔ°¯À
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

AÔÄøµPÒ : (1) AøÚzx ÂÚõUPЮ \›¯õP £vÁõQ EÒÍuõ GߣuøÚ \›£õºzxU
öPõÒÍÄ®. Aa_¨£v¨¤À SøÓ°¸¨¤ß AøÓU PsPõo¨£õÍ›h®
EhÚi¯õPz öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ ©mk÷© GÊxÁuØS®
AiU÷PõikÁuØS® £¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS
ö£ß]À £¯ß£kzuÄ®.
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.

£Sv & I / PART - I
SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 15x1=15

(ii) öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯
Âøhø¯z ÷uº¢öukzxU SÔ±mkhß Âøh°øÚ²® ÷\ºzx
GÊuÄ®.
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.

[ v¸¨¦P / Turn over

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1. 10,00,000Ω ©v¨-¦-øh¯ ªß-u-øh-°ß Ás-nU SÔ-±-k-PÒ __________ BS®.
(A) £Ê¨¦ P¸¨¦ £a-ø\ (B) £Ê¨-¦ P¸¨¦ £Ê¨-¦
(C) £Ê¨¦ P¸¨¦ u[-P® (D) £Ê¨¦ P¸¨¦ ©g-\Ò
__________ is the colour coding of a resistor which resistance value is 10,00,000Ω.
(a) Brown Black Green (b) Brown Black Brown
(c) Brown Black Gold (d) Brown Black Yellow

2. ªß-ys-i-°-ß A»-S __________ BS®.
(A) öíºmì (B) K®ì (C) öíß-Ô (D) £õ-µm
The unit of an inductor is __________.
(a) Hertz (b) Ohms (c) Henry (d) Farad

3. ¤ß-Á-¸-Á-Ú-ÁØ-ÖÒ BØ-ÓÀ ©õØÔ CÀ-»õ-ux Gx ?
(A) ªß- Â-]-Ô (B) J¼-Áõ[-Q
(C) ªß-÷uUQ (D) J¼¨-£õß
Which of the following is not a transducer ?
(a) Electric Fan (b) Microphone
(c) Condenser (d) Speaker

4. RÌU-Ps-h-ÁØ-ÖÒ G¢-uz uÛ-©® I¢x Cøn-v-Óß G»Um-µõß-Pøͨ ö£Óõ-ux ?
(A) Bs-i-©-o (B) £õì-£-µì
(C) Cs-i-¯® (D) Bº-ö\-ÛU
Which of the following element does not have five valence electrons ?
(a) Antimony (b) Phosphorous
(c) Indium (d) Arsenic

5. •Ê Aø»z v¸z-v-°ß Av-P-£m\ vÓß __________ BS®.
(A) 66.6% (B) 100% (C) 40.6% (D) 81.2%
The maximum rectification efficiency in Full Wave Rectifier is __________.
(a) 66.6% (b) 100% (c) 40.6% (d) 81.2%

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6. ‰ßÖ •øÚ-P-øÍ-²®, ‰ßÖ \¢-v-P-øÍ-²® öPõsh SøÓ-P-hzv \õ-uÚ® __________
BS®.
(A) ]¼U-Põß Pm-k¨-£-kz-x® v¸zv
(B) øh÷¯õ-k
(C) øh¯õU
(D) iµõß-]ì-hº
__________ is a three terminal and three junction semiconductor device.
(a) Silicon Controlled Rectifier
(b) Diode
(c) DIAC
(d) Transistor

7. IGBT &ø¯ __________ GÚ-Ä-® AøÇU-P-»õ®.
(A) GEMFET (B) MOIGT
(C) JFET (D) COMFET
An IGBT is also known as __________.
(a) GEMFET (b) MOIGT
(c) JFET (d) COMFET

8. Aø»-¯õUQ EØ-£z-va ö\´-²® Aø»-Ä-PÒ __________ BS®.
(A) uo-¯õu Aø»-Ä-PÒ (B) £s-÷£Ø-Ó¨-£m-h Aø»--PÒ
(C) uo-²® Aø»-Ä-PÒ (D) ÷©Ø-Psh AøÚz-x®
An oscillator produces __________.
(a) Undamped Oscillation (b) Modulated Wave
(c) Damped Oscillation (d) All the above

9. Po-Û {øÚ-Á-Pz-vÀ J¸ Q÷»õø£m Gß-£-x __________ ø£m-PÒ BS®.
(A) 2000 (B) 1000
(C) 3024 (D) 1024
In computer memory, 1 kilobyte is equivalent to __________ bytes.
(a) 2000 (b) 1000
(c) 3024 (d) 1024

[ v¸¨¦P / Turn over

8478 4

10. ö\Â-²-nº Avº-öÁs GÀ-ø» __________ BS®.
(A) 100 Hz - 1000 Hz (B) 200 Hz - 2000 Hz
(C) 10 Hz - 10,000 Hz (D) 20 Hz - 20,000 Hz
Audio Frequency range is __________.

(a) 100 Hz - 1000 Hz (b) 200 Hz - 2000 Hz

(c) 10 Hz - 10,000 Hz (d) 20 Hz - 20,000 Hz

11. RÊÒÍ-ÁØ-ÖÒ Gx E°º {øÚ-Á-P® ?
(A) PROM (B) ROM
(C) EPROM (D) RAM
Which is the Live memory among the below ?

(a) PROM (b) ROM

(c) EPROM (d) RAM

12. £S-•-øÓ £S¨-£õøÚ E¸-ÁõU-Q-¯-Áº ¯õº ?
(A) }À- ÷£õº (B) ¤øÍì £õì-PÀ
(C) \õº-»ì £õ-÷£ä (D) {³m-hß
Who developed Analytical Engine ?

(a) Neil Bohr (b) Blaise Pascal

(c) Charles Babbage (d) Newton

13. ¤ß-Á-¸-Á-Ú-ÁØ-ÖÒ JØøÓ £¯-Úº C¯UP •øÓø© Gx ?
(A) Mac (B) Linux
(C) DOS (D) Windows
Which one of the following is Single user Operating System ?

(a) Mac (b) Linux

(c) DOS (d) Windows

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14. £µ¢u Áø»-¯-ø©¨-¤ß ÷ÁP® __________ Áµ®-¤À C¸U-S®.
(A) 30 - 40 Mbps (B) 20 - 30 Mbps
(C) 100 - 1000 Mbps (D) 10 - 20 Mbps
The speed of wide area network can range from __________.
(a) 30 - 40 Mbps (b) 20 - 30 Mbps
(c) 100 - 1000 Mbps (d) 10 - 20 Mbps

15. J¸ Aq-ÂÀ EÒÍ ¦÷µõmhõß-P-Îß Gs-oU-øPø¯ __________ GßQ-÷Óõ®.
(A) Aq Gs (B) Aq Gøh
(C) I÷\õ-÷hõ¨ Gs (D) ÷©ØTÔ¯ Gx-Ä-ªÀø»
The number of protons present in an atom is called as :
(a) atomic number (b) atomic weight
(c) isotope number (d) none of the above

£Sv & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® £z- x ÂÚõUPÐUS ©m- k ® _¸UP©õP Âøh¯ÎUPÄ®.
AÁØ-ÔÀ ÂÚõ Gs 28 &US Pmhõ¯©õ-P Âøh¯ÎzuÀ ÷Ásk®. 10x3=30
Note : Answer any ten questions briefly. Question No. 28 is Compulsory.

16. Áøµ-¯Ö : vÓ¢u _ØÖ, ‰i¯ _Ø-Ö.
Define open-circuit and closed circuit.

17. J¼-Áõ[-Q-°ß £o-ø¯U TÖ-P.
State the function of microphone.

18. Cøn-v-Óß G»Um-µõß Gß-ÓõÀ GßÚ ?
What is Valence electron ?

19. ]¼U-Põß Pm-k¨-£-kz-x® v¸z-v-°ß (SCR) Aøh-¯õÍU SÔ-±-k Áøµ-P.
Draw the symbol for Silicon Controlled Rectifier (SCR).

[ v¸¨¦P / Turn over

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20. ªß-Á-Ç[-Q-°ß ÁøP-PÒ ¯õøÁ ?
What are the types of power conversion ?

21. AÊzu ªß ÂøÍÄ Gß-£x GßÚ ?
What is meant by Piezoelectric effect ?

22. C¸-{ø» Gs •øÓ Gß-ÓõÀ GßÚ ?
What is binary number system ?

23. LCD &°ß wø©-PÒ ¯õøÁ ?

What are the disadvantages of LCD ?

24. öáº-©õ-Û-¯® Aq-Âß Aø©¨ø£ ÁøµP.
Draw the atomic structure of germanium atom.

25. ›-ÁõU-P® uµ-Ä® :
(A) SMPS (-B) USB (-C) GUI
Give the expansion of the following :

(a) SMPS (b) USB (c) GUI

26. £ßø© Avº-Â-°ß ÁøP-PÒ ¯õøÁ ?
What are the types of multivibrator ?

27. PoÛ Áø»-¯-ø©¨¦ Gß-ÓõÀ GßÚ ?
What is a computer network ?

28. Po-Û-°ß öÁÎ-±mk \õ-u-Ú[-P-ÎÀ H÷u-Ý® ‰ßøÓ GÊ-xP.
Write any three output devices of a computer.

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£Sv & III / PART - III
SÔ¨¦ : GøÁ÷¯Ý® I¢-x ÂÚõUPÐUS ©m-k® Âøh¯ÎUPÄ®. ÂÚõ Gs 35 &US
Pmhõ¯©õP Âøh¯ÎzuÀ ÷Ásk®. ÷uøÁ- ¯ õÚ Ch[- P - Î À £h®
Áøµ-¯-Ä®. 5x5=25
Note : Answer any five questions. Question No. 35 is Compulsory. Draw diagrams wherever
necessary.

29. £ø\ ªß-÷uU-Q-PÒ £ØÔ £hz-x-h-ß ÂÍU-P-Ä®.
Draw and explain about electrolytic capacitors.

30. HÊ xsk LED •øÓø¯ _¸U-P-©õP ÂÍU-SP.
Write short notes on seven segment LED.

31. £›-©õØÖ Pm-k¨-£õm-iß ö|Ô-•-øÓ-P-Îß (TCP) |ß-ø©-PÒ ¯õøÁ ?
What are the advantages of Transmission Control Protocol (TCP) ?

32. C¯UP J¼¨-£õ-Ûß £h® Áøµ¢x, £õ-P[-PøÍ SÔU-P-Ä®.
Draw the diagram of dynamic loud speaker with parts.

33. ¼ÚUì ÷\øÁ-¯P ÷©»õs-ø©-°ß £h® Áøµ¢x ÂÍU-P-Ä®.
Draw the Linux distributions diagram and explain.

34. Po-Û-°ß uø»-•-øÓ-PøÍ ÂÍU-P-Ä®.
Explain about generations of computer.

35. Aøµ Aø»z-v-¸z-v-°ß ªß-_Ø-Ö¨ £hzøu ÁøµP.
Draw the circuit diagram of Half Wave Rectifier.

[ v¸¨¦P / Turn over

8478 8

£Sv & IV / PART - IV
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. ÷uøÁ-¯õÚ Ch[-P-ÎÀ £h®
Áøµ¯Ä®. 2x10=20

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

36. (A) ªß-u-øh-P-Îß öuõ-hº Cøn¨¦ •øÓ ©Ø-Ö® ªß-u-øh-P-Îß £UP Cøn¨¦
•øÓ £ØÔ £hz-x-hß ÂÍU-P-Ä®.
AÀ»x
(B) £õ-» -ÁøP Aø»z-v-¸z-v-°ß ªß-_Ø-Ö¨ £h® Áøµ¢x, Ax ö\¯À-£-k®
•øÓ-ø¯ ÂÍU-P-Ä®.
(a) Explain Resistor connected in series and Resistor connected in parallel with diagram.

OR

(b) Draw the circuit diagram of bridge rectifier and explain its working function.

37. (A) Gs •øÓ-PÒ £ØÔ ÂÁ-›U-P-Ä®.
.

AÀ»x
(B) RAM &ß ÁøP-P-øÍ Â›-ÁõP ÂÍU-P-Ä®.
(a) Explain in detail about the number system.

OR

(b) Give detailed explanation about types of RAM.

-o0o-

Study Materials
Notes

Model Papers Class 6 Notes

Sample Papers Class 7 Notes
Half Yearly Sample Papers Class 8 Notes

Class 9 Notes
Important Resources
Class 10 Notes
Periodic Table
Class 11 Notes
Writing Skills / Formats

Maps of India / World Class 12 Notes

Books and Solutions

NCERT Books
NCERT Book Solutions
HC Verma Chapter Wise Solutions
RD Sharma Solutions
CGBSE Solutions