TN 12th Question Paper 2024 Basic Electronics Engineering

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 7
7483
!7483BasicElectronicsEngg! £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

7483 2

1. J÷µ J¸ EÒÏk ©ØÖ® öÁαøhU öPõsh J¸ Áõ°À __________.
(A) NOT (B) OR (C) NOR (D) AND
A __________ Gate has only one input and one output.
(a) NOT (b) OR (c) NOR (d) AND

2. «~s ö\¯ØøPU÷PõÒ __________ ØS® SøÓÁõÚ Gøh öPõshx.
(A) 10 Q.Q. (B) 5 Q.Q. (C) 15 Q.Q. (D) 20 Q.Q.
Nano Satellites weigh less than __________.
(a) 10 kg (b) 5 kg (c) 15 kg (d) 20 kg

3. ÷|ºvø\ ªß÷Úõmhzøu ©õÖvø\ ªß÷Úõmh©õP ©õØÖ£øÁ __________ GÚ
AøÇUP¨£kQÓx.
(A) ^µõUSuÀ (B) v¸zv
(C) ªßÚÊzu Cµmi¨¦ (D) ¦µmi
__________ converts Direct Current into Alternating Current.
(a) Regulator (b) Rectifier
(c) Voltage doubler (d) Inverter

4. PõØÔÀ J¼°ß ÷ÁP® :
(A) 1130 «/Â (B) 300 «/Â (C) 350 «/Â (D) 334 «/Â
The velocity of Sound in Air :
(a) 1130 m/s (b) 300 m/s (c) 350 m/s (d) 334 m/s

5. ªß Aø»PøÍ ªßPõ¢u Aø»PÍõPÄ®, ªßPõ¢u Aø»PøÍ ªß
Aø»PÍõPÄ® ©õØÖ® BØÓÀ ©õØÔ __________ GÚ¨£kQÓx.
(A) J¼ Áõ[Q (B) BsöhÚõ
(C) £s÷£ØÔÓUQ (D) J¼¨£õß
A transducer which converts electrical power into electromagnetic waves and vice versa is
called __________.
(a) Microphone (b) Antenna
(c) Modem (d) Loud speaker

3 7483

6. ö\´v Hؤ Gߣx __________ £›©õØÓ •øÓ°ß Euõµn©õS®.
(A) •Ê Cµmøh
(B) Aøµ Cµmøh
(C) Aøµ Cµmøh ©ØÖ® •Ê Cµmøh
(D) J¸ vø\
Pager is the example of __________ transmission mode.
(a) Full duplex
(b) Half duplex
(c) Half and full duplex
(d) Simplex

7. CµzuzvÀ EÒÍ BU]áß Áµ®¤øÚ PshÔ¯ G¢u P¸Â £¯ß£kQÓx ?
(A) ìø£÷µõ«mhº (B) Cµzu AÊzu©õÛ
(C) Aø»UPõmi (D) xi¨¦ BU]«mhº
Which instrument is used to measure the oxygen level in blood ?
(a) Spirometer (b) BP Monitor
(c) Oscilloscope (d) Pulse Oximeter

8. Aø»Ãa_ ©v¨¦PøÍ C»UP©õUSÁx __________ GßÖ AøÇUP¨£kQÓx.
(A) \õ®£À {ø»PÒ (B) ©õv›¯õUP®
(C) Chg\õº¢u PÍ® (D) SøÁ¯©õUP®
Digitizing the amplitude values is called __________.
(a) Grey Levels (b) Sampling
(c) Spatial Domain (d) Quantization

9. AM £µ¨¦ GÀø» __________.
(A) 500 kHz •uÀ 1000 kHz Áøµ (B) 530 kHz •uÀ 1500 kHz Áøµ
(C) 88 MHz •uÀ 108 MHz Áøµ (D) 540 kHz •uÀ 1600 kHz Áøµ
AM transmission broadcast range __________.
(a) from 500 kHz to 1000 kHz (b) from 530 kHz to 1500 kHz
(c) from 88 MHz to 108 MHz (d) from 540 kHz to 1600 kHz

10. ÷uv, ÷|µ® ©ØÖ® PoÛ Pmhø©¨¦UPøÍa ÷\ªUS® EÒÍø©Ä ]À¾Âß
(Chip) ö£¯º GßÚ ?
(A) JFET (B) RAM (C) FET (D) CMOS
What is the name of the on board chip that stores the date, time and system configuration ?
(a) JFET (b) RAM (c) FET (d) CMOS

[ v¸¨¦P / Turn over

7483 4

11. ö©ßuõUS£Áº öuõ¨¤°ß {Ó[PÒ :
(A) öÁÒøÍ, P¸¨¦, \õ®£À (B) P¸¨¦, ]Á¨¦, £aø\
(C) öÁÒÎ, P¸¨¦, ]Á¨¦ (D) ]Á¨¦, £aø\, ©g\Ò
The colours of Hackers’ hat :
(a) White, Black, Grey (b) Black, Red, Green
(c) Silver, Black, Red (d) Red, Green, Yellow

12. UHF Aø»÷£] Aø©¨¤À __________ öuõÈÀ~m£® £¯ß£kQÓx.

(A) CDMA (B) FDMA (C) SDMA (D) TDMA
In UHF cellular system __________ technology is used.
(a) CDMA (b) FDMA (c) SDMA (d) TDMA

13. £¯Ú›ß PoÛ AÀ»x £¯Úº PnUQÀ EÒ~øDz® ]UP¾UPõÚ Põµn®
GßÚ ?
(A) Cøn¯ ö\¯¼Ç¨¦ (B) ö©ßö£õ¸Ò ¦x¨¤zuÀ
(C) £õxPõ¨¦ uõUSuÀ (D) Áßö£õ¸Ò ¦x¨¤zuÀ
What can be the cause for login issue into their system or account ?
(a) Internet failure (b) Software update
(c) Security Attack (d) Hardware update

14. ö\¯ØøPU÷PõÎß ªß ‰»® __________.
(A) {»UP› (B) `›¯ß (C) \¢vµß (D) ö£m÷µõÀ
The __________ is the main energy source for Satellites.
(a) Coal (b) Sun (c) Moon (d) Petrol

15. ULN 2003 A GßÝ® IC &À £¯ß£kzu¨£k® hõº¼[hß ÷áõiPÎß GsoUøP
__________ .

(A) 5 (B) 3 (C) 7 (D) 4
In ULN 2003 A IC the number of Darlington pairs used are __________.
(a) 5 (b) 3 (c) 7 (d) 4

5 7483

£S-v & 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 ten of the following questions. Question No. 28 is compulsory.

16. Cøn¢u Áõ°ÀPÎß ö£¯ºPøÍ GÊxP.
Write the names of Combinational gates.

17. mÃmhº ©ØÖ® FL£º BQ¯ÁØøÓ Áøµ¯ÖUPÄ®.
Define Tweeter and Woofer.

18. IPT GßÓõÀ GßÚ ?
What is meant by IPT ?

19. ªß £õxPõ¨¦ GßÓõÀ GßÚ ?
What is meant by Electrical Safety ?

20. ö£õx £Qµø» Hß E¸ÁõUP¨£mhx ? Cx G[S £¯ß£kQÓx ?
Why is public hotspot created ? Where is it used ?

21. ø\£º SØÓ® £ØÔ GÊxP.
Write about cyber crime.

22. LM 317 T Cøn¨¦PõÀ Áøµ£h® ÁøµP.
Draw the pin diagram of LM 317 T.

23. ö\¯ØøPz xønU÷PõÒ £ØÔ ]Ö SÔ¨¦ ÁøµP.
Write short notes on an artificial satellite.

24. OLED &°ß |ßø©PÒ ¯õøÁ ?
What are the advantages of OLED ?

[ v¸¨¦P / Turn over

7483 6

25. «ö¯õ¼¯ø» E¸ÁøµÂ°ß £¯ß£õkPøÍU TÖP.
State the uses of ultrasonography.

26. PoÛ £µõ©›¨¦ GßÓõÀ GßÚ ?
What is computer maintenance ?

27. JÎ CøÇPÎÀ EÒÍ Ai¨£øh EÖ¨¦PÒ ¯õøÁ ?
What are the basic elements of fiber optics ?

28. FM ÁõöÚõ¼ Hؤ°À E°¸ÒÍ £ÊxPøÍ v¸zx® •øÓ°øÚ¨ £mi¯¼kP.
List out the live faults rectification in FM radio receivers.

£S-v & III / PART – III
SÔ¨¦ : GøÁ-÷¯-Ý® I¢x ÂÚõU-P-ÐUS ©mk® Âøh-¯-ÎU-P-Ä®. AÁØÔÀ ÂÚõ
Gs 35 &US Pm-hõ-¯-©õP Âøh-¯-ÎzuÀ ÷Ásk®. ÷uøÁ¯õÚ Ch[PÎÀ
£h[PÒ ÁøµP. 5x5=25
Note : Answer any five questions. Question No. 35 is compulsory. Draw diagrams wherever
necessary.

29. Ãa_ ©õØÔ ÁõöÚõ¼ Hؤ°ß Pmh¨£h® ÁøµP.
Draw the block diagram of AM Radio receiver.

30. PoÛ Áø»¯ø©¨¤À £Êx }USu¼À EÒÍ £i{ø»PøÍ GÊuÄ®.
Write down the steps involved in Troubleshooting the Computer Network.

31. GsoPÒ £ØÔ ÂÁ›UPÄ®.
Explain about Counters.

32. PoÛ Áßö£õ¸Ò ©ØÖ® ö©ßö£õ¸Ò P¸ÂPøͨ £mi¯¼hÄ®.
List out the Computer hardware and Software tools.

7 7483

33. J¨¦ø© ©ØÖ® C»UPÁøP ¤®£ ö\¯»õUPzøu ÷ÁÖ£kzuÄ®.
Distinguish between analog and digital image processing.

34. J¸ {ø» •Ê Aø»z v¸zv°ß £h® ÁøµP.
Draw the single phase full-wave rectifier.

35. JÎ CøÇUP®¤°ß |ßø©PøÍ GÊxP.
Write about the advantages of an OFC.

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

36. (A) H÷uÝ® I¢x uºUP Áõ°ÀPÎß ö\¯À£õmøh Áøµ¢x Esø©
AmhÁøn²hß ÂÁ›UPÄ®.
AÀ-»-x
(B) Aø»÷£]°ß £À÷ÁÖ uø»•øÓ öuõÈÀ~m£[PøÍ J¨¤hÄ®.
(a) Explain the working of any five logic gates with truth table and diagram.
OR
(b) Compare the various generations of mobile phone technology.

37. (A) ö£õx AÔ¨¦ Aø©¨¤ß (PA System) Pmh¨£hzøu Áøµ¢x JÆöÁõ¸
£Sv°ß ö\¯À£õmøh GÊuÄ®.
AÀ-»-x
(B) EhØSÇõ´ EÒ÷|õUQ P¸Â°ß ÁøPPøÍ GÊv, Auß £¯ß£õkPøÍ
ÂÍUSP.
(a) Draw the block diagram of PA system and explain the working of each block.
OR
(b) Write the types of endoscopy and explain its application.

-oOo-

[ v¸¨¦P / Turn over

No. of Printed Pages : 7
7503(A)
!7503ABasicElectronicsEngg! £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

7503(A) 2

1. Jzv¯[Põ GsoPÒ __________ GßÖ AøÇUP¨£kQÓx.
(A) £vß© GsoPÒ (B) ]ØÔø» GsoPÒ
(C) ©mk GsoPÒ (D) £» PiPõµ GsoPÒ
Asynchronous Counters are known as __________.
(a) decade counters (b) ripple counters
(c) modulus counters (d) multiple clock counters

2. ö£¯ºÄ £v÷ÁØÔ°À uµÄPøÍ öuõhºa]¯õP |Pºzu __________ ÷uøÁ.
(A) Gmk PiPõµz xi¨¦PÒ
(B) J¸ PiPõµz xi¨¦
(C) J¸ uµÂØS J¸ PiPõµz xi¨¦ Ãu®
(D) J¸ £Ð xi¨¦
To serially shift a byte of data into a shift register, there must be __________.
(a) eight clock pulses
(b) one clock pulse
(c) one clock pulse for each 1 in the data
(d) one load pulse

3. VHF ©ØÖ® UHF £møhPÎÀ £¯ß£k® H¢÷uo ÁøP :

(A) ¯õQ Ehõ H¢÷uo (B) C¸ x¸Á H¢÷uo
(C) Áøͯ H¢÷uo (D) ©iUP¨£mh C¸ x¸Á H¢÷uo
The type of antenna used in VHF and UHF bands is __________.
(a) Yagi uda antenna (b) Dipole antenna
(c) Loop antenna (d) Folded dipole antenna

4. H.G® ÁõöÚõ¼ Áõ[Q°ß Cøh{ø» AvºöÁs __________ BS®.
(A) 455 kHz (B) 10 kHz (C) 445 kHz (D) 100 kHz
The intermediate frequency of A.M radio receiver is __________.
(a) 455 kHz (b) 10 kHz (c) 445 kHz (d) 100 kHz

3 7503(A)

5. ¤Íõì©õ vøµPÎÀ £¯ß£kzu¨£k® Áõ²UPÒ :
(A) øímµáß ©ØÖ® Ｏ® (B) BU]áß ©ØÖ® Põº£ß ÷©õÚõUøék
(C) ø|mµáß ©ØÖ® Ｏ® (D) öéÚõß ©ØÖ® {¯õß
__________ gases are used in plasma display.
(a) Hydrogen and helium (b) Oxygen and Carbon monoxide
(c) Nitrogen and helium (d) Xenon and neon

6. __________ £›©õØÓ £¯ß •øÓUS ""¥¨£º'' GkzxPõmhõS®.
(A) J¸ vø\ (B) •Ê Cµmøh
(C) Aøµ Cµmøh (D) ÷©ØPsh GxĪÀø»
Beeper is the example of __________ transmission mode.
(a) Simplex (b) Full duplex
(c) Half duplex (d) None of the above

7. ö\¯ØøPU÷PõÎÀ £¯ß£k® £s÷£ØÓ ÁøP :
(A) Pmh¨ £s÷£ØÓ® (B) Ãa_¨ £s÷£ØÓ®
(C) ÷Põn¨ £s÷£ØÓ® (D) AvºöÁs £s÷£ØÓ®
The type of modulation is used in satellite is :
(a) Phase Modulation (b) Amplitude Modulation
(c) Angle Modulation (d) Frequency Modulation

8. JÎ CøÇUP®¤ uPÁÀ ~m£©õÚx __________ Ai¨£øh°À ö\¯À£kQßÓx.
(A) ªß Põ¢u Âø\ (B) ªß Põ¢uz yshÀ
(C) £µì£µ yshÀ (D) EÒ ¤µv£¼¨¦
The principle of OFC technology :
(a) Electro motive force (b) Electromagnetic induction
(c) Mutual inductance (d) Internal reflection

9. ~snø» AvºöÁs GÀø» :
(A) 300 MHz •uÀ 300 GHz (B) 1 GHz •uÀ 30 GHz
(C) 550 kHz •uÀ 1650 kHz (D) 100 kHz •uÀ 30 MHz
Microwave Frequency ranges were :
(a) 300 MHz to 300 GHz (b) 1 GHz to 30 GHz
(c) 550 kHz to 1650 kHz (d) 100 kHz to 30 MHz

[ v¸¨¦P / Turn over

7503(A) 4

10. ""µõìö£º› ø£'' xÁ[P EuÄ® ]Ó¢u ö©õÈ __________.
(A) áõÁõ (B) ]++
(C) ø£zuõß (D) ÷©ØPsh GxĪÀø»
__________ is a good language to start with Raspberry Pi.
(a) Java (b) C++
(c) Python (d) None of the above

11. Aø» Ãa_ ©v¨¦PøÍ C»UP©õUSÁøu __________ GÚ AøÇUQ÷Óõ®.
(A) ©õv›¯õUP®
(B) ©õv›¯õUP® ©ØÖ® SøÁ¯©õUP®
(C) SøÁ¯©õUP®
(D) J뼀
Digitizing amplitude values is called __________.
(a) Sampling
(b) Sampling and Quantization
(c) Quantization
(d) Illuminance

12. ©zv¯ Aµ\õÀ {ºn°UP¨£mkÒÍ öuõÈØ\õø»¨ £Sv°ß Cøµa\À AÍÄ
__________ BS®.
(A) 55 - 65 dBA (B) 40 - 50 dBA (C) 70 - 75 dBA (D) 45 - 55 dBA
The noise level of industrial area decided by the Central Government is between __________.
(a) 55 - 65 dBA (b) 40 - 50 dBA (c) 70 - 75 dBA (d) 45 - 55 dBA

13. ULN 2003 A GßÝ® IC &À £¯ß£kzu¨£k® hõº¼[hß ÷áõiPÎß GsoUøP
__________ BS®.
(A) 5 (B) 3 (C) 7 (D) 4
In ULN 2003 A IC the number of Darlington pairs used are __________.
(a) 5 (b) 3 (c) 7 (d) 4

14. 8085 ~s ö\¯»õUQ°À __________ Cøh³Ö \ªUøbPÒ EÒÍÚ.
(A) 5 (B) 3
(C) 9 (D) ÷©ØPsh GxĪÀø»
There are __________ interrupt signals in 8085 microprocessors.
(a) 5 (b) 3
(c) 9 (d) none of the above

5 7503(A)

15. PET E¸ÁøµÂ°À J¸ £õêmµõß EªÊ® I÷\õ÷hõ¨ öPõsi¸US® J¸
E°›¯À ‰»UTÖ __________ GÚ AøÇUP¨£kQÓx.
(A) øh¯º (B) m÷µ\º (C) \›£õº¨£Áº (D) iµõUPº
In PET imaging, a biologic molecule that carries a positron emitting isotope is called as
__________.
(a) Dyer (b) Tracer (c) Verifier (d) Tracker

£S-v & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® £zx ÂÚõUPÐUS ©mk® Âøh¯ÎUPÄ®. AÁØÔÀ ÂÚõ
Gs 28 &US Pmhõ¯©õP Âøh¯ÎzuÀ ÷Ásk®. 10x3=30

Note : Answer any ten of the following questions. Question No. 28 is compulsory.

16. £ßø©¯õUQ & _¸UP©õP ÂÁ›UPÄ®.
Write shortly about Multiplexer (MUX).

17. xi¨¦¨ £s÷£ØÓzvß ÁøPPøÍ TÖP.
What are the different types of Pulse Modulation ?

18. A»QkuÀ GßÓõÀ GßÚ ?
What is meant by scanning ?

19. |øh ÷£]°ß £¯ß£õkPÒ ¯õøÁ ?
Write applications of Walkie-talkie.

20. ¤®£zøu ÷©®£kzxuÀ GßÓõÀ GßÚ ?
What is image enhancement ?

21. C¯UQa _ØÖPÒ GßÓõÀ GßÚ ?
What is switching circuits ?

22. DC - DC ©õØÔPøͨ £ØÔ GÊxP.
Write about DC to DC converters.

23. ""Bºi²÷Úõ'' GßÓõÀ GßÚ ?
What is meant by Arduino ?

[ v¸¨¦P / Turn over

7503(A) 6

24. H÷uÝ® ‰ßÖ ÁøP ¦øP¨£hU SÇõ´PÎß ö£¯ºPøÍ GÊxP.
Write any three types of camera tube.

25. ÷µhõº GßÓõÀ GßÚ ?
What is RADAR ?

26. ö\¨ ö£õÔ°ß |ßø©PÒ ¯õøÁ ?
Write the advantages of Headphone.

27. |õßS ÁøP¯õÚ EhØSÇõ´ EÒ÷|õUQ°ß ö£¯ºPøÍ £mi¯¼kP.
Name any four types of Endoscopy.

28. ]Ö SÔ¨¦ ÁøµP : ÁõÛø» ö\¯ØøPU÷PõÒ
Write short note - Weather Satellite.

£S-v & III / PART - III
SÔ¨¦ : GøÁ÷¯Ý® I¢x ÂÚõUPÐUS ©mk® Âøh¯ÎUPÄ®. AÁØÔÀ ÂÚõ
Gs 35 &US Pmhõ¯©õP Âøh¯ÎzuÀ ÷Ásk®. ÷uøÁ¯õÚ Ch[PÎÀ
£h[PÒ ÁøµP. 5x5=25
Note : Answer any five questions. Question No. 35 is compulsory. Draw diagrams wherever
necessary.

29. EX-OR, EX-NOR Áõ°ÀPÎß Aø©¨¤øÚ²®, ö\¯À£õmiøÚ²® Esø©
AmhÁøn°ß ‰»® ÂÁ›UPÄ®.
Explain in detail the construction of EX-OR and EX-NOR gate with truth table.

30. Aø»÷£]°ß |ßø© ©ØÖ® wø©PøÍ ÂÍUSP.
Explain the advantages and disadvantages of cellphone.

31. ÷\õÚõ›ß £¯ß£õkPøͨ £mi¯¼kP.
List out the applications of SONAR.

32. Gί ÁøP CCTV Aø©¨ø£ ÂÍUPÄ®.
Explain simple CCTV system.

7 7503(A)

33. J¸ {ø» •Ê Aø»zv¸zv°ß £h® ÁøµP.
Draw the single-phase full wave rectifier.

34. Cøh©õØÖ / ÂøµÄ {øÚÁPzvß |ßø© wø©Pøͨ £mi¯¼kP.
List out the advantages and disadvantages of Cache memory.

35. J¨¦ø©¨ £s÷£ØÓ® ©ØÖ® xi¨¦¨ £s÷£ØÓ® CµsiØS® EÒÍ
÷ÁÖ£õmøh ÂÁ›UPÄ®.
Differentiate Analog and Pulse Modulation.

£S-v & IV / PART - IV
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. ÷uøÁ¯õÚ Ch[PÎÀ £h®
ÁøµP. 2x10=20

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

36. (A) •ÊU Tmi ©ØÖ® AøµU PÈzuÀ _ØÖPÎß £h[PøÍ Áøµ¢x Esø©
AmhÁøn°ß ‰»® ÂÁ›UPÄ®.
AÀ-»-x
(B) ö£õx AÔ¨¦ Aø©¨¤ß Pmh¨£hzøu Áøµ¢x, JÆöÁõ¸ £Sv°ß
ö\¯À£õmøh GÊuÄ®.
(a) Construct full adder and half subtractor circuits. Prove with Truth Table.
OR
(b) Draw the block diagram of Public Addressing System and explain each block.

37. (A) P®¤Áhz öuõhº¦ •øÓUS®, JÎ CøÇU P®¤z öuõhº¦ •øÓUS® EÒÍ
÷ÁÖ£õkPÒ £ØÔ ÂÁ›UPÄ®.
AÀ-»-x
(B) {øÚÁP¨ £Sv GßÓõÀ GßÚ ? Auß |ßø©, wø©PÒ £ØÔ GÊxP.
(a) Explain briefly the difference between optical fiber and co-axial cable.
OR
(b) What is Memory Unit ? Write its Advantages and Disadvantages.

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