CBSE Class 12 Sample Paper 2023 Engineering Graphics

SAMPLE QUESTION PAPER
XII – (2022-23)
ENGINEERING GRAPHICS (046)

Time Allowed: 3 hours Maximum Marks: 70

Note:
(i) Attempt all the questions.
(ii) Use both sides of the drawing sheet, if necessary.
(iii) All dimensions are in millimetres.
(iv) Missing and mismatching dimensions, if any, may be suitably
assumed.
(v) Follow the SP: 46 – 2003 revised codes. (with first angle method of
projection)
(vi) In no view of question 21, are hidden edges or lines required.
(vii) In question 23, hidden edges or lines are to be shown in views
without section.

SECTION – A
Q 1 to Q 8 – Answer the following multiple choice questions. Print the correct
choice on your drawing sheet:

1. Which one among the following methods cannot produce ‘One
plane/pictorial’ drawings?
a) Isometric Projection
b) Perspective Projection
c) Oblique Projection
d) Orthographic Projection
2. ______________ resembles an inverted solid.
a) A cone filled with ice-cream
b) A glass prism
c) Pyramid of Giza
d) A cylindrical glass tumbler

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3. Which figure among the following correctly represents a triangular prism
whose axis is perpendicular to H.P and one of its base edges is parallel to
V.P.?

4. A gasket in Flange Pipe Joint is provided to
a) align the two flanges.
b) check leakage of fluid in pipes.
c) support the nuts and bolts.
d) fill the gap between the flanges.
5. The joint used for tightening of electric overhead wires is
a) Spigot and Socket Joint
b) Turn Buckle / Tie Rod Joint
c) Gib and Cotter Joint
d) Knuckle Joint

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6. CRS in Open Bearing stands for
a) Centre to centre distance
b) Edge to edge distance
c) Corner to corner distance
d) Top to bottom distance
7. P.C.D. in flange pipe joint means
a) Pitch corner diameter
b) Pitch counter distance
c) Pitch centre distance
d) Pitch circle diameter
8. Usually taper in cotter is given as
a) 1 in 10
b) 1 in 20
c) 1 in 30
d) 1 in 40

Q 9 to Q 14 – Select the correct option corresponding to the orientation of the
given Isometric Projection:

9.

a) The hexagonal ends are parallel to VP
b) The pentagonal ends are parallel to VP
c) The hexagonal ends are perpendicular to VP
d) The pentagonal ends are perpendicular to VP

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10.

a) Axis of cone is perpendicular to HP, axis of prism is parallel to VP
b) Axis of cone is perpendicular to VP, axis of prism is parallel to HP
c) Axis of cone is perpendicular to HP, axis of prism is perpendicular
to VP
d) Axis of cone is parallel to VP, axis of prism is perpendicular to HP

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11.

a) A pentagonal prism is resting on top of pentagonal disc. Axis of
prism is parallel to VP and that of disc is perpendicular to VP.
b) A hexagonal prism is resting on top of hexagonal disc. Axis of prism
is perpendicular to HP and that of disc is parallel to VP.
c) A hexagonal prism is resting on top of pentagonal disc. Axis of
prism is parallel to VP and that of disc is perpendicular to HP.
d) A pentagonal prism is resting on top of hexagonal disc. Axis of
prism is parallel to VP and that of disc is perpendicular to HP.

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12.

a) Two vertical prisms where one of the base edges of the prism at
the rear is perpendicular to HP
b) Two vertical pyramids with one base edge of the pyramid is parallel
to VP and nearer to it
c) Two vertical solids with one base edge of the pyramid away from
observer and parallel to VP
d) Two horizontal solids with one base edge of the prism parallel to
VP and nearer to it

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13.

a) The length of common axis is true 65mm
b) The length of common axis is iso 65mm
c) The length of common axis is more than iso 65mm
d) The length of common axis is less than iso 65mm
14.

a) A horizontal solid placed on a vertical solid
b) A horizontal solid placed on a horizontal solid
c) A vertical solid placed on a horizontal solid
d) A vertical solid placed on a vertical solid

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Q15 – Two statements are given – one labelled assertion (A) and the other
labelled reason (R). Select the correct answer to the following question from
the codes (a), (b), (c) and (d) as given below:

a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true and R is not the correct explanation of A.
c) A is true but R is false.
d) A is false and R is also false.

15. A: ‘Four centre method’ is used while drawing isometric view of a
hemisphere.
R: The iso projection of its circular face is a sphere.

Q16 to Q 20 – Answer Read the following para and answer the following
questions.

Two friends who are the students of class XII Engg. Graphics had to fix
the problems in their bike during the summer vacation. While purchasing the
spare parts at a machinery shop, they observed a machine part similar to bolt.
They sent the following image of that machine part to their Engg. Graphics
teacher. Then the teacher explained everything about that part, which is called as
stud.

16. Which category does the stud belong to?
a) Permanent fastner
b) Permanent bearing
c) Temporary fastener
d) Temporary bearing

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17. Stud is a
a) Headless bolt
b) Headless key
c) Square headed bolt
d) Hexagonal headed bolt
18. Name the shape of the central portion of the above figure
a) Collar
b) Web
c) Cover
d) Rod
19. What is the outer diameter of the central portion of the above figure, when
‘d’ is the diameter of stud?
a) 0.8 d
b) d
c) 1.1 d
d) 1.5 d
20. What is the length of the metal end of a stud with 20mm diameter?
a) 46mm
b) 43mm
c) 20mm
d) 16mm

SECTION – B

21. (a) Construct an isometric scale. 5
(b) Draw the isometric projection of a pentagonal prism (base edge 25 mm,
axial length 55mm) resting on its face with its axis parallel to H.P. and
V.P. both. Indicate the direction of viewing. Give all the dimensions. 10

22. Draw to scale 1:1, the standard profile of the Metric thread profile
(Internal) with the pitch = 50mm. Give standard dimensions. 8

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OR

Draw to scale 1:1, the front view and top view of a square headed nut
across flat, the diameter is given as 25 mm. The axis of the nut is vertical.
Give the standard dimensions. 8

23. Figure 1 shows the details parts of an Open Bearing. Assemble all the parts
correctly and then draw to scale 1:1; it’s following views:
(a) Front View, right half in section 13
(b) Top View 8
Print the title and scale used. Draw projection symbol. Give 6 important
dimensions. 6

Figure 1

OR

Figure 2 shows the assembly of a ‘Gib and Cotter Joint’. Disassemble the parts
correctly and then draw to scale 1:1 its following views of the following
components. Keeping the same position with respect to H.P and V.P. as given:

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(a) FORK END

(i) Front View, Upper half in section. 9

(ii) Top View. 6

(b) GIB

(i) Front View. 4

(ii) Side View. 2

(c) Print the titles of both and scale used. Draw the projection symbol.
Give 6 important dimensions. 6

Figure 2

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