TN 11th Question Paper 2026 Basic Mechanical Engineering

FOR TN 11TH EXAM PREPARATION

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

TN 11th 2026 Question Paper Basic Mechanical Engineering

Notes · Sample Papers · Previous Year Papers · Mock Tests

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No. of Printed Pages : 8
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!9181IstYearBasicMechanicalEngineering! £vÄ Gs
Register Number

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BASIC MECHANICAL ENGINEERING - THEORY

( / 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. ÷£UQ[ xsøh £¯ß£kzu ÷Ásk®.
__________

(A) C¯¢vµ[PøÍ ö£õ¸zx® ÷£õx (A) Ch® ©õØÖ® ÷£õx
(B) C¯¢vµ[PÒ C¯[S® ÷£õx
(C) C¯¢vµ £õP[PÒ ö£õ¸zu¨£k® ÷£õx
(D) C¯¢vµ[PÒ {Özu¨£k® ÷£õx
The packing pieces are used at the time of __________.

(a) While lifting or shifting the machine tools

(b) Running of the machine

(c) While fitting the machine tools

(d) While stopping the machine

2. Áøµ£hzvÀ AÍÄU÷PõmiØS Cøn¯õP ÷©À£UP® GÊx® •øÓ :
(A) }mh¨£mhU ÷Põk •øÓ (B) Aø»sk ]ìh®
(C) ²ÛøhµU\ÚÀ ]ìh® (D) ½hºø»ß •øÓ
The method of placing dimensions parallel and above the dimension lines is :

(a) Extension line method (b) Aligned System

(c) Unidirectional system (d) Leader line method

3. Qøh©mh ÷Põk ©ØÖ® Cøn÷PõkPÒ Áøµ¯ £¯ß£kzu¨£k® Áøµ£hU
P¸Â :
(A) L¤öµg_ ÁøÍÄ (B) &ÁiÁ ©mh¨£»øP T

(C) Áøµ£h £»øP (D) £õøP©õÛ
Horizontal and parallel lines are drawn with :

(a) French curve (b) T-square

(c) Drawing board (d) Protractor

4. ÷PõmiøÚ JÊUPø©Ä ö\´¯ £¯ß£k® ö\¯À•øÓ __________ .
(A) ORTHO (B) OSNAP

(C) XALIGN (D) RIGHTALIGN

__________ function helps in aligning the lines .

(a) ORTHO (b) OSNAP

(c) XALIGN (d) RIGHTALIGN

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

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5. Cøn¨¤ß ~qUP® ªP •UQ¯® GÛÀ, GÆÁøP¯õÚ Cøn¨ø£
÷uº¢öuk¨£õ´ ?
(A) CøhöÁίØÓ Cøn¨¦ (B) AÊzu Cøn¨¦
(C) Eµõ´Ä Cøn¨¦ (D) CøhöÁβÒÍ Cøn¨¦
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If accuracy is very important, what type of fit would you choose ?
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(a) Transition fit

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(c) Friction fit (d) Clearance fit

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__________

(A) C¸•øÚ Pµsi (B) ©söÁmi
(C) \À»øh (D) PõØÓÊzv
__________ instrument is used to clean the mould sand by removing unwanted materials.

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(a) Slick (b) Shovel

(c) Riddle

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Aa]ØS ö\À¾® ÁÈø¯ öÁmh __________ .
(A) iµõ ìø£U (B) öÁßm µõk
(C) yUQ (D) ÷Pm Pmhº
__________ is used for cutting gate in the mould.

(a) Draw Spike (b) Vent Rod

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(c) Lifter (d) Gate Cutter

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(C) Av÷ÁP GLS
(B) Põº£ß GLS
(D) öÁmkÎ GLS
Which kind of steel is used to make milling tools ?

(a) Stainless steel (b) Carbon steel

(c) High speed steel (d) Tool steel

[ v¸¨¦P / Turn over

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9. ¤zuøÍ°ß E¸S{ø» __________ .
(A) (B)
3268 C 6588 C (C) 9308 C (D) 4198 C

The melting point of Brass is :

(a) 3268 C (b) 6588 C (c) 9308 C (d) 4198 C

10. ÁøÍÁõÚ £µ¨¦PøÍ ÷u´UP £¯ß£k® Aµ® :
(A) •U÷Põn ÁiÁ Aµ® (B) umøh¯õÚ Aµ®
(C) AøµÁmh ÁiÁ Aµ® (D) \xµ ÁiÁ Aµ®
Curved surfaces can be filed with a :

(a) Triangular file (b) Flat file

(c) Half round file (d) Square file

11. BßÂÀ ©ØÖ® v®¤Ò BQ¯ £õP[PÒ Põn¨£k® AÍUS® P¸Â :
(A) ø©U÷µõ«mhº (B) öÁºÛ¯º Põ¼ö£º
(C) ÷µi¯ì ÷Pä (D) öÁºÛ¯º E¯µ AÍÂ
Anvil and thimble are found in this measuring instrument .

(a) Micrometer (b) Vernier Caliper

(c) Radius Gauge (d) Vernier Height Gauge

12. ©øµ (A) ÷£õÀm CøuU öPõsk SÔ¨¤h¨£kQÓx.
(A) ¤ma Âmh® (B) Ea\ Âmh®
(C) ©øµ°øhz yµ® (D) SøÓ¢u Âmh®
A screw or bolt is specified by its _______.

(a) Pitch diameter (b) Major diameter

(c) Pitch (d) Minor diameter

13. _Ǿ® \Uvø¯ ÷|ºU÷PõmiÀ •ßÝ® ¤ßÝ® |P¸® Âø\¯õP ©õØÖ®
£À¼øn :
(A) umøh ©ØÖ® ]Ö £À¼øn (B) ÷|º £À¼øn
(C) \›Ä¨ £À¼øn (D) ö|ÎĨ £À¼øn
Which gear is used to convert rotary motion into linear motion ?

(a) Rack and pinion gear (b) Spur gear

(c) Bevel gear (d) Helical gear

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

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14. ªß÷Úõmhzvß A»S :
(A) B®¤¯º (B) ÷ÁõÀm (C) K® (D) Áõm
The unit of current is __________.

(a) Ampere (b) Volt (c) Ohm (d) Watt

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15. ªß\õµ ÂÍUøP Psk¤izuÁº :
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Electric lamp was invented by __________.

(a) Faraday (b) Benjamin Franklin

(c) Fleming (d) Thomas Alva Edison

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SÔ¨¦ : GøÁ÷¯Ý® £zx ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 28 &US
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Note : Answer any ten questions. Question No. 28 is compulsory.

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16. £õxPõ¨¦ SÔ¨¦PÎß ÁøPPÒ ¯õøÁ
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What are the classification of safety precautions ?

17. EMS &ß Â›ÁõUP® GßÚ ?
Expand EMS.

18. £›©õnªku¼ß ÁøPPÒ ¯õøÁ ?
What are the types of dimensioning ?
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What are the types of Scales ?

21. ""Cøn¨¦'' GßÓõÀ GßÚ ?
What is Fit ?

[ v¸¨¦P / Turn over

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22. ©õv› ÁiÁ® u¯õ›UP £¯ß£k® ö£õ¸mPÒ ¯õøÁ ?
What are the materials used to make pattern ?

23. öÁ¨£¨£kzv Sn©õØÓ® ö\´²® •øÓPÒ ¯õøÁ ?
What are the methods of heat treatment ?

24. AÍÂPÎß |ßø©PÒ ¯õøÁ ?
What are the advantages of Gauges ?

25. ©øµ°ß ÁiÁ[PøÍ TÖP.
Mention the form of threads.

26. \›Ä £À¼ønPÒ GßÓõÀ GßÚ ?
What is a Bevel Gear ?

27. ªß÷©õmhõ›ß £õxPõ¨¤ØPõP xÁUQ²hß ö£õ¸zu¨£mkÒÍ £õxPõ¨¦
\õuÚ[PÒ ¯õøÁ ?
What are the safety devices fitted in starters to protect the induction motors ?

28. ªß C¯US Âø\ GßÓõÀ GßÚ ?
What is Electro Motive Force ?

£Sv & III / PART - III

SÔ¨¦ : GøÁ÷¯Ý® I¢x ÂÚõUPÐUS ©mk® Âøh¯ÎUPÄ®. ÂÚõ Gs 35 &ØS
Pmhõ¯® Âøh¯ÎUPÄ®. 5x5=25

Note : Answer any five questions. Question No. 35 is compulsory.

29. £zx HØ£kÁuØPõÚ Põµn[PÒ ¯õøÁ ?
What are the main causes for accident ?

30. ö£õ¸¢x® ußø©°ß Aø©¨¤À £¯ß£kzx® xøÓa ö\õØPÒ ¯õøÁ ?
What are the basic terminology words in Interchangeable System ?

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

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31. Aa_ ©s u¯õ›UP¨ £¯ß£k® ‰»¨ö£õ¸ÒPÒ ¯õøÁ ? H÷uÝ® JßÔøÚ
ÂÍUSP.
What are the raw materials used to make the moulding sand ? Explain any one.

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32. öÁ¨£¨£kzv Sn©õØÓ® ö\´Áuß ÷|õUP[PÎÀ H÷uÝ® I¢vøÚ GÊxP.

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Write any five points about the purpose of Heat treatment.

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33.

Explain power transmission by a belt drive.

34. \õ塧 •UQ¯ AÍÄPÒ ¯õøÁ ?
What are the important dimensions of key ?

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35. _µskuÀ •øÓø¯ ÂÁ›zx, Auß ÁøPPøÍ TÖP.
Explain the process of Scraper with types.

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SÔ¨¦ : ›ÁõP Âøh¯ÎUPÄ®. 2x10=20

Note : Answer the following questions in detail.

36. (A) (i) Bm÷hõ ÷PiÀ AkUSPÎß •UQ¯zxÁzøu ÂÍUSP.
(ii) AkUSPøÍ £¯ß£kzv ÷Põmiß ÁøPø¯ Áøµ¯ÖzuÀ GÆÁõÖ ?
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c. (B) (green sand moulding) ö\´²® •øÓø¯ £h® Áøµ¢x
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l as
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(ii) How the line type is defined using layers in AutoCAD ?

OR

(b) Draw and explain the methods of green sand moulding ?

[ v¸¨¦P / Turn over

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37. (A) öÁίÍÄ ø©U÷µõ«mhøµ¨ £h® Áøµ¢x ÂÍUSP.
AÀ»x
(B) H÷uÝ® C¸ ©øµPÎß ÁiÁ[PøÍ Áøµ¢x ÂÍUSP.
(a) Explain about the outside micrometer with figure.

OR

(b) Draw and explain any two forms of thread.

- o 0 o -

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