Karnataka SSLC Question Paper 2026 Elements of Mechanical Engineering IV

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Total No. of Questions : 17 ]

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Subject : ELEMENTS OF MECHANICAL ENGINEERING - IV

¶´¤MO⁄ : 01. 04. 2026 ] [ Date : 01. 04. 2026
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V⁄¬Œ⁄r @MO⁄V⁄◊⁄fl : 80 ] [ Max. Marks : 80
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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
on the right side to open the paper at the time of commencement of
the examination ( Follow the arrow mark ). Do not cut the left side to
open the paper. Check whether all the pages of the question paper are
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3. Follow the instructions given against the questions.
4. Figures in the right hand margin indicate maximum marks for the
questions.
5. The maximum time to answer the paper is given at the top of the
question paper. It includes 15 minutes for reading the question paper.

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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. In petrol engine charge drawn during the suction stroke, is

(A) only air

(B) air and petrol mixture

(C) only petrol

(D) only diesel

2. Compression ratio of diesel engine is

(A) 16 : 1 to 20 : 1 (B) 7 : 1 to 12 : 1

(C) 12 : 1 to 16 : 1 (D) 8 : 1 to 14 : 1

3. The heart of the I.C. engine is

(A) Connecting rod (B) Flywheel

(C) Crank case (D) Cylinder

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4. The process of embossing a diamond shaped pattern on the

surface of a workpiece is

(A) Facing (B) Turning

(C) Knurling (D) Drilling

5. Process of enlarging the hole size is known as

(A) Boring (B) Spot facing

(C) Drilling (D) Reaming

6. Exterior angle of a regular pentagon is

(A) 108º (B) 72º

(C) 120º (D) 60º

7. If both front and top views of a plane are straight lines, the

true shape will lie on

(A) Horizontal plane (B) Inclined plane

(C) Vertical plane (D) Profile plane

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8. 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) Square

9. Number of faces in a cube is

(A) 4 (B) 5

(C) 6 (D) 8

10. In orthographic projection the top view of an object is

obtained on the

(A) Horizontal plane

(B) Vertical plane

(C) Profile plane

(D) Auxiliary plane

II. Answer the following questions :

11. a) Define I.C. engine. 2

b) Explain the following : 3

i) Bore

ii) Stroke

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c) Write the comparison between petrol engine and diesel

engine. 5

12. a) What are the types of I.C. engines on the basis of method of

ignition ? 2

b) Explain the function of Tailstock. 3

c) Draw the neat sketch of I.C. engine and label the parts. 5

13. a) List the different types of lathe. 2

b) With a neat sketch explain the working principle of a lathe

machine. 3

c) List the different operations performed on drilling machine.

Explain tapping operation. 5

14. a) Explain taper turning operation on lathe. 5

b) An equilateral triangular lamina of 30 mm side lies with one

of its edges on HP such that the surface of lamina is

inclined to the HP at 60º. Draw its top and front views. 5

15. a) A circular lamina of 70 mm diameter rests on HP such that

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

top and front views. 5

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b) Draw the projections of a cone of 50 mm diameter of base

and 60 mm height when it rests with its base on HP. 5

16. A pentagonal prism of 30 mm side of base and height 60 mm

rests with one of its edges of the base on HP such that the axis is

inclined at 30º to HP and parallel to VP. Draw the top and front

views. 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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Draw the isometric view of an object from the given orthographic

views in Figure No. 2. 10

Figure No. 2

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