Karnataka SSLC Question Paper 2024 Elements of Mechanical Engineering

Karnataka School Examination and Assessment Board

QUESTION
PAPERS
2024

CCE RF/RR (A)/666/042

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Question Paper Serial No.
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Total No. of Printed Pages : 8 ]

Jlflo Æ⁄√ÀÊ-V⁄◊⁄ —⁄MSÊ¿ : 8 ] CCE RF/RR
Total No. of Questions : 8 ] FULL SYLLABUS
—⁄MOÊfi}⁄ —⁄MSÊ¿ : 52
Code No. : 52

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Subject : ELEMENTS OF MECHANICAL ENGINEERING - IV
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(Regular Fresh / Regular Repeater)

03. 04. 2024
¶´¤MO⁄ : 03. 04. 2024 ] [ Date : 03. 04. 2024
ÓÜÊÜá¿á : ¸æÙÜWæY 10-15 Äí¨Ü ÊÜá«ÝÂÖÜ° 1-30 ÃÜÊÜÃæWæ ] [ Time : 10-15 A.M. to 1-30 P.M.
V⁄¬Œ⁄r @MO⁄V⁄◊⁄fl : 80 ] [ Max. Marks : 80
Cut here /BΔ« O⁄}⁄°¬“
General Instructions to the Candidate :
1. This question paper consists of 8 questions in all.
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 ). Do not cut the left side to open
the paper. Check whether all the pages of the question paper are intact.
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.
6. Ensure that the Version of the question paper distributed to you and
Tear here

the Version printed on your admission ticket is the same.

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CCE RF/RR (A)/666/042 52
Note : i) Answer all the questions.

ii) Drawing should be drawn in drawing sheet only.

iii) All dimensions are in mm.

1. 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

i) Compression ratio in petrol engine when compared to diesel

engine is

(A) Less (B) More

(C) Very high (D) All of these

ii) Spark plug is used in

(A) Diesel engine (B) Oil engine

(C) Petrol engine (D) Electric engine

iii) Air filter is used in

(A) Petrol engine (B) Diesel engine

(C) Electric engine (D) Steam engine

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CCE RF/RR (A)/666/042 52
iv) The type of drilling machine used to drill a hole up to

12 mm diameter is

(A) Pillar drilling machine

(B) Upright drilling machine

(C) Radial drilling machine

(D) Sensitive drilling machine

v) Process of enlarging the hole size is known as

(A) Drilling (B) Reaming

(C) Boring (D) Spot facing

vi) In orthographic projections, the XY line is known as

(A) Reference line (B) Horizontal line

(C) Horizontal trace (D) Vertical line

vii) Which of the following positions is not possible for a plane ?

(A) Perpendicular to both V.P. and H.P.

(B) Parallel to both V.P. and H.P.

(C) Perpendicular to H.P., parallel to V.P.

(D) Perpendicular to V.P., parallel to H.P.

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CCE RF/RR (A)/666/042 52
viii) The top view of a circular disc inclined to H.P. and parallel

to V.P. is

(A) A circle (B) An ellipse

(C) A point (D) A line

ix) A solid has

(A) Two dimensions (B) Three dimensions

(C) One dimension (D) Four dimensions

x) The hidden part in a drawing is shown as

(A) Continuous thin line (B) Long dark line

(C) Continuous thick line (D) Dashed line

2. a) Mention any two advantages of four-stroke engine. 2

b) Explain the working of a two-stroke petrol engine. 3

c) Write the comparison between external combustion and

internal combustion engines. Give examples. 5

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CCE RF/RR (A)/666/042 52
3. a) Mention the uses of internal combustion engines. 2

b) Name the types of I.C. engine on the following bases : 3

i) Types of fuel used

ii) Position of engine cylinder

iii) Number of strokes

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

4. a) List the different operations on drilling machine. 2

b) Explain thread cutting operation carried out on lathe. 3

c) With a neat sketch, explain countersinking operation

carried out on drilling machine. 5

5. a) Write short notes on the following : 5

i) Lathe bed

ii) Lathe tail stock

b) A square lamina ABCD of 30 mm side rests on the corner C

such that the diagonal AC is inclined at 45º to H.P. Draw its

top and front views. 5

6. a) A hexagonal lamina of 30 mm sides rests on H.P. with one of

its sides. The surface of the lamina is inclined at 45º to H.P.

Draw its top and front views. 5

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CCE RF/RR (A)/666/042 52
b) Draw the top and front views of a cube of 30 mm sides

resting with one of its square faces lying on H.P. and one of

the vertical square surfaces. Other parallel or perpendicular

to V.P. 5

7. Draw the top and front views of a right circular cylinder of base

30 mm diameter and axis 50 mm long resting on H.P. such that

axis is inclined to H.P. at 30º and parallel to V.P. 10

8. 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 'Y'

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

Figure No. 1

OR

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CCE RF/RR (A)/666/042 52
The orthographic views of an object are shown in Figure No. 2.

Draw the isometric projection of the object. 10

Figure No. 2

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CCE RF/RR (A)/666/042 52

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