Karnataka SSLC Question Paper 2025 Elements of Mechanical Engineering

Government of Karnataka
Karnataka Secondary Education Examination Board

Question Papers

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TEAR HERE TO OPEN THE QUESTION PAPER
Subject : ELEMENTS OF MECHANICAL ENGINEERING - IV

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General Instructions to the Candidate :
1. This question paper consists of 17 questions.
2. This question paper has been sealed by reverse jacket. You have to cut
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the examination ( Follow the arrow mark ). Do not cut the left side to
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5. The maximum time to answer the paper is given at the top of the
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the Version printed on your admission ticket are the same.

CCE RF/RR(A)/101/1830 1 of 8

CCE RF/RR(A)/101/1830 52
Note : i) Answer all the questions.

ii) Drawing should be drawn in drawing sheet only.

iii) All dimensions are in mm.

I. Four alternatives are given for each of the following

questions / incomplete statements. Select the most

appropriate alternative and write it in the answer book along

with its alphabet : 10 × 1 = 10

1. Rectilinear motion is converted into rotary motion with the

help of

(A) valves and piston

(B) crank and connecting rod

(C) connecting rod and piston

(D) crank and piston

2. Four stroke sequence of operation is

(A) suction, exhaust, compression and power

(B) suction, power, exhaust and compression

(C) suction, compression, power and exhaust

(D) suction, compression, exhaust & power

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CCE RF/RR(A)/101/1830 52
3. A diesel engine has

(A) one valve (B) four valves

(C) three valves (D) two valves

4. Mother of all machine tools is

(A) Milling machine (B) Lathe

(C) Grinding machine (D) Drilling machine

5. Process of enlarging the hole size is known as

(A) Spot facing (B) Drilling

(C) Reaming (D) Boring

6. A plane has

(A) three dimensions (B) four dimensions

(C) two dimensions (D) one dimension

7. If a circular plane is inclined at 30º with the H.P. and 60º

with the V.P., its side view will be

(A) Ellipse (B) Straight line

(C) Circle (D) True shape

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CCE RF/RR(A)/101/1830 52
8. If the top view of a plane is a rhombus, the object may be

(A) Square (B) Parallelogram

(C) Octagon (D) Rectangle

9. A solid has

(A) one dimension (B) three dimensions

(C) two dimensions (D) four dimensions

10. The projectors in isometric views are

(A) converging

(B) diverging

(C) parallel to plane of projection

(D) perpendicular to plane of projection

II. Answer the following questions :

11. a) Write the types of I.C. engines on the basis of method of

cooling. 2

b) Explain any three parts of I.C. engine. 3

c) Write the comparison between four-stroke and two-stroke

I.C. engines. 5

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CCE RF/RR(A)/101/1830 52
12. a) Explain E.C. engines and I.C. engines. 2

b) Classify the different types of lathe. 3

c) Explain with a neat diagram a four-stroke diesel I.C. engine.

5

13. a) List the different types of operation carried out on lathe. 2

b) Explain turning operation on lathe. 3

c) Mention the different types of drilling machines. 5

14. a) Draw a neat sketch of lathe and label the parts. 5

b) A pentagonal lamina of edges 30 mm is resting on H.P. with

one of its corners touching it such that the plane surface

makes an angle of 60º with H.P. Draw its top and front

views. 5

15. a) A circular lamina of 60 mm diameter rests on H.P. such that

the surface of the lamina is inclined at 30º to H.P. Draw its

top and front views. 5

b) Draw the top and front views of a hexagonal pyramid of

30 mm side of base and height 70 mm resting with its base

on H.P. such that one of the base edges is parallel to V.P.

and nearer to it. 5

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16. Draw the top and front views of a cone of 60 mm diameter of base

and axis 80 mm long lying on H.P. with its axis inclined at 45º to

it and parallel to V.P. 10

17. The pictorial view of an object is shown in Figure No. 1. Draw the

following orthographic views and mark the dimensions : 10

i) Front view — Looking in the direction of arrow 'X'

ii) Top view — Looking in the direction of arrow 'Z'

iii) Side view — Looking in the direction of arrow 'Y'.

Figure No. 1

OR

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CCE RF/RR(A)/101/1830 52
Draw the isometric view of an object from the given orthographic

views in Figure No. 2. 10

Figure No. 2

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CCE RF/RR(A)/101/1830 52

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