TN 11th Question Paper 2024 Basic Electronics Engineering

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 7
7683
!7683IstYearBasicElectronicsEngineering! £vÄ Gs
Register Number

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

7683 2

1. Aø» }Ízvß A»S :
(A) K® (B) ø©U÷µõ L£õµm
(C) «mhº (-D) B®¤¯º
The unit of wavelength is :
(a) Ohm (b) Micro farad
(c) Meter (d) Ampere

2. ªß Aø»ø¯ \¨u Aø»¯õP ©õØÖ® \õuÚ® :
(A) ªß÷uUQ (B) J¼ Áõ[Q (C) ªßP»® (-D) J¼¨£õß
Electrical signal can be converted into audio signal by :
(a) Condenser (b) Microphone (c) Cell (d) Speaker

3. N ÁøPU SøÓPhzv°À PmkÓõ G»UmµõßPÒ Gß£Ú __________ PhzvPÒ
BS®.
(A) Põ¢u (B) ]Ö£õßø©
(C) |k{ø» (-D) ö£¸®£õßø©
In N-type semiconductor free electrons are the __________ carriers.
(a) Magnetic (b) Minority
(c) Neutral (d) Majority

4. iµõß]ìh›À EÒÍ \¢v¨¦PÎß GsoUøP __________.
(A) ‰ßÖ (B) JßÖ (C) |õßS (-D) Cµsk
The number of junctions in a transistor is __________.
(a) Three (b) One (c) Four (d) Two

5. J¸ J¸{ø» £ßø© AvºÂ __________ C¸US®.
(A) Cµsk ©õÓõu {ø»¯õP (B) J¸ ©õÓõu {ø»²® CßÔ
(C) £» ©õÓõu {ø»PÒ (-D) J¸ ©õÓõu {ø»¯õP
A monostable multivibrator has __________.
(a) Two stable state (b) Unstable state
(c) Multistable state (d) One stable state

3 7683

6. £vß© Gs 15 &I C¸{ø» Gs •øÓ°À ©õØÖ® ÷£õx :
(A) 1110 (B) 1111 (C) 1100 (-D) 1000
Decimal number 15 in binary system can be written as :
(a) 1110 (b) 1111 (c) 1100 (d) 1000

7. •uß•u¼À E¸ÁõUP¨£mh PoÛ°ß ö£¯º GßÚ ?
(A) ENIAC (B) IBM
(C) DELL (-D) ø©U÷µõ\õL¨m
What is the name of the first Computer ?
(a) ENIAC (b) IBM
(c) DELL (d) Microsoft

8. JFET &ø¯ __________ iµõß]ìhº GßÖ® AøÇUP»õ®.
(A) J¸ \¢v (B) J¸ x¸Á (C) C¸ \¢v (-D) C¸ x¸Á
A JFET is also called __________ transistor.
(a) Unijunction (b) Unipolar (c) Bi-junction (d) Bipolar

9. öuõS¨¦ ©ØÖ® Á›ö©õÈ ©õØÔPÒ __________.
(A) ö©õÈ ö£¯º¨£õͺPÒ (B) Áßö£õ¸Ò £õP[PÒ
(C) C¯UP •øÓ (-D) ö©õÈPÒ
Compilers and Interpreters are __________.
(a) Translators (b) Hardware parts
(c) Operating System (d) Languages

10. RÌUPõq® G¢u ÷Põ¨¦ AøhÂÀ (Directories) Pmhø©¨¦ ÷Põ¨¦PÒ EÒÍÚ ?
(A) /etc/ (B) /bin/ (C) /dev/ (-D) /root/
In which of the following directories does the configuration files are present ?
(a) /etc/ (b) /bin/ (c) /dev/ (d) /root/

11. Aøµ Cµmøh £›©õØÓ •øÓUS Euõµn® __________.
(A) öuõø»÷£] (B) ö\´v Hؤ (C) ö\À¼h÷£] (-D) |øh÷£]
__________ is example for Half duplex mode transmission.
(a) Telephone (b) Pager (c) Cellphone (d) Walkie-talkie

[ v¸¨¦P / Turn over

7683 4

12. ªß÷Úõmhzvß A»S :
(A) B®¤¯º (B) K®ì
(C) ªßÚÊzu® (-D) ÷©ØPsh GxĪÀø»
The unit of Current is :

(a) Ampere (b) Ohms

(c) Volt (d) None of these

13. ªß ysi°ß ©Ö¨¦zvÓß Põn `zvµ® :

(A) X L = 2π FL (B) XL=2πfL

1 1
(C) X L = 2πLC (-D) XL =
2πfL

The formula for inductive reactance is :

(a) X L = 2π FL (b) XL=2πfL

1 1
(c) XL = (d) XL =
2πLC 2πfL

14. RÌUPshøÁPÎÀ "öPõøh¯õÎ' ÁøPU P»¨¦z uÛ©® Gx ?
(A) £õ죵ì (B) A¾ªÛ¯® (C) Csi¯® (-D) ÷£õµõß
Which of the following is donor impurity element ?

(a) Phosphorous (b) Aluminium (c) Indium (d) Boron

15. `›¯ ªßP» EØ£zv°À ö£¸®£õ¾® £¯ß£k® ö£õ¸Ò __________.
(A) uõªµ® (B) Põº£ß (C) ö\¼Û¯® (-D) D¯®
__________ material is widely used in solar cell production.

(a) Copper (b) Carbon (c) Selenium (d) Lead

5 7683

£Sv & II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® £zx ÂÚõU-P-ÐUS ©mk® Âøh-¯-ÎU-P-Ä®. AÁØÔÀ ÂÚõ
Gs 28 &US Pm-hõ-¯-©õP Âøh-¯-ÎzuÀ ÷Ásk®. 10x3=30
Note : Answer any 10 questions briefly. Question No. 28 is compulsory.

16. Kªß Âvø¯ Áøµ¯Ö.
Define Ohm’s Law.

17. \õÂ (Switch) GßÓõÀ GßÚ ?
What is Switch ?

18. Aq Gs Gߣx GßÚ ?
What is an atomic number ?

19. iµõß]ìhº GßÓõÀ GßÚ ?
What is meant by a transistor ?

20. MOSFET &°ß H÷uÝ® ‰ßÖ £¯ß£õmiøÚU TÖP.
State any three applications of MOSFET.

21. £iP Aø»¯õUQ°ß |ßø©, wø©PøÍ GÊxP.
Write the Merits and Demerits of crystal oscillator.

22. ø©¯a ö\¯»Pzvß •UQ¯¨ £õP[PøÍ GÊxP.
Write down the major divisions of CPU.

23. C»UP ÁøP \ªUøb GßÓõÀ GßÚ ? Euõµn® u¸P.
What is digital signal ? Give example.

24. C¯UP •øÓø©°ß ÷uøÁ GßÚ ?
What is the need for operating system ?

[ v¸¨¦P / Turn over

7683 6

25. ¦Ó Cøn¯zvß wø©PÒ ¯õøÁ ?
What are the disadvantages of extranet ?

26. ªß©õØÔ GßÓõÀ GßÚ ?
What is a transformer ?

27. ©õÖ® ªß÷uUQ GßÓõÀ GßÚ ? Aøh¯õÍU SÔ±k ÁøµP.
What is meant by variable capacitor ? Draw its symbol.

28. PNP ©ØÖ® NPN iµõß]ìhº Aøh¯õÍU SÔ±kPøÍ ÁøµP.
Draw the symbols of PNP and NPN transistor.

£Sv & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® I¢x ÂÚõU- P - Ð US ©mk® Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs
35 &US Pm-hõ-¯-©õP Âøh-¯-ÎzuÀ ÷Ásk®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
Áøµ¯Ä®. 5x5=25
Note : Answer any five questions. Question No. 35 is compulsory. Draw diagrams wherever
necessary.

29. P®¤¯õÀ _ØÓ¨£k® ÁøP ªßuøh°ß EmPmhø©¨¦¨ £h® Áøµ¢x ÂÍUSP.
Draw and explain about wire wound resistors.

30. BJT ©ØÖ® JFET J¨¤kP.
Compare BJT and JFET.

31. ªß©õØÔ°À HØ£k® CǨ¦PÒ £ØÔ ÂÁ›UPÄ®.
Explain about the losses occurred in a transformer.

32. ªßÚÊzu¨ ö£¸UQ ©ØÖ® ªß\Uv¨ ö£¸UQ J¨¤kP.
Compare voltage amplifiers and power amplifiers.

33. C¸{ø» Gs •øÓ £ØÔ ÂÍUSP.
Explain Binary number system.

7 7683

34. C¯UP •øÓø©°ß öuõhUP® (Booting of OS) £ØÔ ÂÍUPÄ®.
Explain booting of Operating System.

35. JÎ CøÇ Áhzvß |ßø©PÒ ©ØÖ® wø©PÒ £ØÔ GÊxP.
Write about the advantages and disadvantages of optical fibre cable.

£Sv & IV / PART - IV

SÔ¨¦ : AøÚz-x ÂÚõU-P-ÐU-S® Âøh-¯-ÎU-P-Ä®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
Áøµ¯Ä®. 2x10=20
Note : Answer all the questions. Draw diagrams wherever necessary.

36. (A) C¯UP J¼Áõ[Q – ÷Áø» ö\´²® •øÓø¯ £hzxhß ÂÁ›UPÄ®.
AÀ-»-x
(B) RC Cøn¨¦ ö£¸UQ £ØÔ ÂÁ›UPÄ®.
(a) Explain the working of a dynamic microphone with neat diagram.
OR
(b) Explain the working, functions of RC coupled amplifier.

37. (A) L£¯ºÁõÀ ©ØÖ® Auß ÁøPPøÍ Â›ÁõP ÂÁ›UPÄ®.
AÀ-»-x
(B) ªß÷uUQ°ß ö\¯À£õkPøͨ £mi¯¼kP.
(a) Explain firewall and its types in detail.
OR
(b) List out the functions of a Capacitor.

-oOo-

[ v¸¨¦P / Turn over

No. of Printed Pages : 7
7703(A)
!7703AIstYearBasicElectronicsEngineering! £vÄ Gs
Register Number

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

7703(A) 2

1. vÓß PnUQh¨£k® `zvµ® __________.
(A) P = V/I (B) P = I⋅R (C) P = V/R (-D) P = V⋅I
The power can be calculated by __________ formula.
(a) P = V/I (b) P = I⋅R (c) P = V/R (d) P = V⋅I

2. 10,00,000 Ω ©v¨¦øh¯ ªßuøh°ß ÁsnU SÔ±k :

(A) £Ê¨¦ P¸¨¦ £aø\ (B) £Ê¨¦ P¸¨¦ £Ê¨¦
(C) £Ê¨¦ P¸¨¦ u[P® (-D) £Ê¨¦ P¸¨¦ ©g\Ò
The colour coding of a resistor whose resistance value is 10,00,000 Ω :
(a) Brown Black Green (b) Brown Black Brown
(c) Brown Black Gold (d) Brown Black Yellow

3. ÷ÁõÀhõ´U AkUS GßÓ •uÀ DµÁøP ªßP»zøu E¸ÁõUQ¯Áº :
(A) Aö»ì\õß÷µõ ÷ÁõÀmhõ (B) Rev. {U÷Põ»ì ÷P»sk
(C) ©õºU÷PõÛ (-D) ø©U÷PÀ L£õµ÷h
The first wet cell voltaic pile was invented by __________.
(a) Alessandra Volta (b) Rev. Nicholas Calland
(c) Marconi (d) Michael Faraday

4. J¸ uÛ AkUS ªß©õØÔ°ß _ØÖPÎß ÂQu® __________.
(A) 2 : 1 (B) 1 : 2 (C) 2 : 2 (-D) 1 : 1
The ratio of winding in isolating transformer is :
(a) 2:1 (b) 1:2 (c) 2:2 (d) 1:1

5. ©õ`mh¨£mh SøÓPhzv __________ GßÖ AøÇUP¨£kQÓx.
(A) _zu©õÚ SøÓPhzv (B) P»¨¦U SøÓPhzv
(C) ¦Ó¯»õÚ SøÓPhzv (-D) EÒÍõº¢u SøÓPhzv
A doped semiconductor is called __________.
(a) pure semiconductor (b) impure semiconductor
(c) extrinsic semiconductor (d) intrinsic semiconductor

3 7703(A)

6. öẩõÛ¯zvß Aq Gs :
(A) 29 (B) 6 (C) 32 (-D) 14
Atomic number of Germanium.
(a) 29 (b) 6 (c) 32 (d) 14

7. Aøµ Aø» v¸zv°ß AvP£m\ ÂøÚvÓß __________.
(A) 50% (B) 20.3% (C) 40.6% (-D) 80.6%
The maximum efficiency of a half-wave rectifier is __________.
(a) 50% (b) 20.3% (c) 40.6% (d) 80.6%

8. ªP AvP©õP¨ £¯ß£k® Cøn¨¦ •øÓ ö£¸UQ __________.
(A) ö£õx AiÁõ´ (B) ö£õx HØ£õß
(C) ö£õx EªÌ¨£õß (-D) ÷©ØPsh GxĪÀø»
The most commonly used transistor arrangement is __________.
(a) Common base (b) Common collector
(c) Common emitter (d) None of the above

9. ÷Pm •øÚ CÀ»õu \õuÚ® :
(A) SCR (B) iøµ¯õU (C) øh¯õU (-D) FET
The device that does not have gate terminal is __________.
(a) SCR (b) TRIAC (c) DIAC (d) FET

10. Aø»¯õUQ EØ£zv ö\´²® Aø»ÄPÒ :
(A) uo¯õu Aø»ÄPÒ (B) £s÷£ØÓ¨£mh Aø»ÄPÒ
(C) uo²® Aø»ÄPÒ (-D) ÷©ØPsh GxĪÀø»
An oscillator produces __________ oscillations.
(a) Undamped (b) Modulated
(c) Damped (d) None of the above

11. Pmh ©õØÓ Aø»¯õUQ°À AvºöÁsøn {ºn°US® EÖ¨¦PÒ :
(A) R ©ØÖ® C (B) L ©ØÖ® C (C) R ©ØÖ® L (-D) R, L ©ØÖ® C
In a phase shift oscillator, the frequency determining elements are __________.
(a) R and C (b) L and C (c) R and L (d) R, L and C

[ v¸¨¦P / Turn over

7703(A) 4

12. C¸{ø» Gs 10101 &US \©©õÚ £vß© {ø» Gs :
(A) 21 (B) 13 (C) 23 (-D) 19
Binary 10101 in decimal system is equivalent to :
(a) 21 (b) 13 (c) 23 (d) 19

13. •uß •u¼À E¸ÁõUP¨£mh PoÛ°ß ö£¯º :
(A) ENIAC (B) IBM
(C) DELL (-D) ø©U÷µõ\õL¨m
What is the name of the first computer ?
(a) ENIAC (b) IBM
(c) DELL (d) Microsoft

14. PoÛø¯¨ ö£õÖzuÁøµ |® PsoØSz öu›¯õu ö£õ¸Ò __________.
(A) ö©ßö£õ¸Ò (B) Áß ©ØÖ® ö©ßö£õ¸Ò
(C) Áßö£õ¸Ò (-D) CvÀ HxªÀø»
In computer, we cannot see __________ part through our eyes.
(a) Software (b) Both Hardware and Software
(c) Hardware (d) None of the above

15. J¸ ].Bº.K &øÁ¨ £¯ß£kzv __________ AÍUP»õ®.
(A) AvºöÁs (B) Pmh®
(C) ªßÚÊzu® (-D) CøÁ¯øÚzx®
A CRO is used to measure __________.
(a) Frequency (b) Phase
(c) Voltage (d) All of these

£S-v & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® £zx ÂÚõU-P-ÐUS Âøh-¯-ÎU-P-Ä®. ÂÚõ Gs 28 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 10x3=30
Note : Answer any ten questions. Question number 28 is Compulsory.

16. Áøµ¯ÖUPÄ® – vÓ¢u _ØÖ ©ØÖ® ‰i¯ _ØÖ.
Define - Open Circuit and Closed Circuit.

17. ªß©õØÔ GßÓõÀ GßÚ ?
What is a Transformer ?

5 7703(A)

18. CønvÓß G»Umµõß GßÓõÀ GßÚ ?
What is Valence electron ?

19. BØÓÀ £møh GßÓõÀ GßÚ ?
What is called energy band ?

20. Aøµ Aø»zv¸zv GßÓõÀ GßÚ ?
What is half-wave rectifier ?

21. ö£¸UQPÎÀ HØ£k® Sø»ÄPÎß ÁøPPøÍ GÊxP.
Write down the types of distortion in amplifier.

22. MOSFET &ß £¯ßPøÍU TÖP.
State the applications of MOSFET.

23. iµõß]ìhº Aø»¯õUQ°ß ÁøPPøÍU TÖP.
What are the types of Transistor Oscillator ?

24. uºUP Áõ°ÀPÒ GßÓõÀ GßÚ ?
What is a logic gate ?

25. PoÛ°ß uø»•øÓ¨ ö£¯ºPøÍ GÊxP.
Write down the names of the generations of computer.

26. J¨¦ø© £» AÍøÁ©õÛ°ß ~svÓøÚ Áøµ¯ÖUPÄ®.
Define sensitivity of an analog multimeter.

27. C»UP ÁøP Aø»Põmi°ß ÁøPPøÍ GÊxP.
Write about the types of digital CRO.

28. iµõß]ìhº GßÓõÀ GßÚ ?
What is meant by a transistor ?

[ v¸¨¦P / Turn over

7703(A) 6

£S-v & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® I¢x ÂÚõU-P-ÐUS Âøh-¯-ÎU-P-Ä®. ÂÚõ Gs 35 &US
Pm- h õ- ¯ - © õP Âøh- ¯ - Î U- P - Ä ®. ÷uøÁ¯õÚ Ch[PÎÀ £h[PÒ
Áøµ¯Ä®. 5x5=25

Note : Answer any five questions. Question number 35 is Compulsory. Draw diagrams
wherever necessary.

29. P›© ªßuøhPÒ £ØÔ £hzxhß ÂÁ›UPÄ®.
Draw and explain about Carbon Resistors.

30. ªß ysiø¯ GÆÁõÖ ÁøP¨£kzxÁõ´ ? ÂÁ›UPÄ®.
How the inductors are classified ? Explain.

31. PmkÓõ G»UmµõßPÒ £ØÔ SÔ¨¦ ÁøµP.
Write notes on free electrons.

32. iµõß]ìh›ß £¯ß£õkPøÍU TÖP.
What are the applications of transistor ?

33. LED ©ØÖ® LCD – J¨¤kP.

Compare LED and LCD.

34. C»UPÁøP ªßÚq¯¼ß AÝT»[PøͲ®, ¤µvT»[PøͲ® GÊxP.
Write the advantages and disadvantages of digital electronics.

35. J¨¦ø© £» AÍøÁ©õÛ°ß £¯ßPøÍ GÊxP.
Write the uses of analog multimeter.

7 7703(A)

£S-v & IV / PART - IV

SÔ¨¦ : AøÚz-x ÂÚõU-P-ÐU-S® Âøh-¯-ÎU-P-Ä®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
Áøµ¯Ä®. 2x10=20
Note : Answer all the questions. Draw diagrams wherever necessary.

36. (A) ªß÷uUQ°ß ö\¯À£õkPøͨ £mi¯¼kP.
AÀ-»-x
(B) ªßÚÊzu Cµmi¨£õÛß ö\¯À£õmøh¨ £hzxhß ÂÁ›UPÄ®.
(a) List out the functions of a Capacitor.
OR
(b) Explain the function of Voltage doubler with neat diagram.

37. (A) íõºm¼ Aø»¯õUQ°ß Pmhø©¨¦ ©ØÖ® ÷Áø» ö\´²® •øÓø¯
ªß_ØÖ £hzxhß ÂÍUPÄ®.
AÀ-»-x
(B) ÷£õº Aq ©õv›ø¯ uS¢u £hzxhß Â›ÁõP ÂÍUSP.
(a) Describe the construction and working principle of Hartley Oscillator
Circuit.
OR
(b) Explain the Bohr’s atomic model with suitable diagram.

-o0o-

[ v¸¨¦P / Turn over

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