CBSE Class 12 Sample Paper 2023 Solution Engineering Graphics

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

Time Allowed: 3 hours Maximum Marks: 70

SECTION – A

Value Points

1. d) Orthographic Projection 1
2. a) A cone filled with ice-cream 1
3. b) 1
4. b) check leakage of fluid in pipes 1
5. b) Turn Buckle / Tie Rod Joint 1
6. a) Centre to centre distance 1
7. d) Pitch circle diameter 1
8. c) 1 in 30 1
9. b) The pentagonal ends are parallel to VP 1
10. c) Axis of cone is perpendicular to HP, axis of prism is perpendicular to VP 1
11. 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 1
12. c) Two vertical solids with one base edge of the pyramid away from observer and
parallel to VP 1
13. b) The length of common axis is iso 65mm 1
14. b) A horizontal solid placed on a horizontal solid 1
15. c) A is true but R is false 1
16. c) Temporary Fastener 1
17. a) Headless Bolt 1
18. a) Collar 1
19. d) 1.5 d 1
20. c) 20mm 1

Page 1 of 7

SECTION – B

21. (a) ISOMETRIC SCALE 5

(i) Drawing 45o inclined line showing true lengths 1
(ii) Projections on 30o inclined line showing isometric length with 1mm
subdivisions in one part 3
(iii) Writing titles, sub titles and angles 1

21. (b) ISOMETRIC PROJECTION OF PENTAGONAL PRISM 10

(i) Helping figure 1
(ii) Drawing both the iso-pentagons 4
(iii) Drawing four face edges 3
(iv) Dimensions 1
(v) Indicating the axis and direction of viewing 1

22. METRIC THREAD (INTERNAL) 8

(i) Distance equal to pitch, and angles of 60 o 2
(ii) Flat edges and curves for threads 2
(iii) Side edges / flanks 2
(iv) Dimensions 2

OR

HEXAGONAL NUT 8

(i) Drawing front view with details 3
(ii) Drawing top view with details 3
(iii) Dimensions and titles 2

Page 2 of 7

23. ASSEMBLY OF OPEN BEARING

(a) FRONT VIEW RIGHT HALF IN SECTION 13

(i) Drawing right half body with hole 4
(ii) Drawing left half body 21/2
(iii) Hatching in body 1
(iv) Drawing right half bush 11/2
(v) Drawing left half bush. 3
(vi) Hatching in bush 1

(b) TOP VIEW 8

(i) Drawing outline of body with two vertical lines 2
(ii) Drawing two holes with center lines 2
(iii) Drawing bush 2
(iv) Hidden lines 11 /2
(v) Cutting plane 1 /2

(c) OTHERS 6

(i) Important Dimensions 3
(ii) Printing title, Projection symbol and Scale used 3

OR

DIS-ASSEMBLY OF GIB AND COTTER JOINT

(a) FORK END

(i) FRONT VIEW UPPER HALF IN SECTION 9
a. Drawing body with conventional end 6
b. Drawing hole (2) and hatching in upper half 3

(ii) Top View. 6
a. Drawing body with two vertical lines 4
b. Drawing hole 2

Page 3 of 7

(b) GIB

(i) Front View 4
a. Drawing body (2) and taper (2) 4

(ii) Side View 2

(c) OTHERS 6

(i) Important Dimensions. 3
(ii) Titles, Symbol of Projection and Scale used. 3

Page 4 of 7

SAMPLE QUESTION PAPER – II

FIG – 1.4

OR

Page 5 of 7

Page 6 of 7

Page 7 of 7