CBSE Academic Class XII Engineering Graphics Sample Question Paper 2015-16
Name of the Board : CBSE Academic
Class : XII STD
Subject : Engineering Graphics
Year : Engineering Graphics
Website : http://cbseacademic.in/SQP_CLASSXII_2015_16.html
Download Sample Question Paper : https://www.pdfquestion.in/uploads/8078Engineering.pdf
Engineering Graphics Sample Question Paper :
Time Allowed : 3 hours
Maximum Marks : 70
Related : CBSE Academic Class XII Theatre Studies Sample Question Paper 2015-16 : www.pdfquestion.in/8076.html
Note :
a) Attempt all the questions.
b) Use both sides of the drawing sheet, if necessary.
c) All dimensions are in millimetres.
d) Missing and mismatching dimensions, if any, may be suitably assumed.
e) Follow the SP: 46, 2003 revised codes. (with First angle method of projection)
f) In no view of question 1, are hidden edges or lines required.
g) In question 4, hidden edges or lines are to be shown in views without section.
h) Number your answers according to questions.
Q1 Answer the following Multiple Choice Questions. Print the correct choice on your drawing sheet. (1 X 5= 5)
(i) What is the thread angle in degrees of a Metric thread?
(a) 30°
(b) 45°
(c) 60°
(d) 90°
(ii) A circle drawn in isometric projection appears as?
(a) Circle
(b) Round
(c) Ellipse
(d) Spherical
(iii) Section lines are generally inclined with the base, at an angle of?
(a) 00
(b) 450
(c) 500
(d) 900
(iv) Which machine part is called as “HEADLESS BOLT”?
(a) Nut
(b) Screw
(c) Rivet
(d) Stud
(v) M in dimension „Stud of M20?, stands for
(a) Metric Thread Profile
(b) Square Thread Profile
(c) Knuckle Thread Profile
(d) B.S.W. Thread Profile
Q2 (a) Construct an isometric scale. 4
(b) Draw the isometric projection of an inverted frustum of triangular pyramid (base triangular edge = 30mm, top triangular edge = 50mm, height=80mm) with one base edge perpendicular to V.P. and its axis perpendicular to the H.P. Give all the dimensions and indicate the direction of viewing. 7
(c) An upright cone (diameter = 50mm and height = 70mm) is placed centrally on the top rectangular face of a pentagonal prism (base side = 50mm and axis = 80mm). The pentagonal prism is resting on one of its face edges on H.P. with axis parallel to V.P. and H.P. both. Draw the isometric projection of this combination of solids. Give the dimensions and indicate the direction of viewing. 13
Q3 (a) Draw to scale 1:1, the front view and top view of a Square Nut (across corner) with diameter 30mm. Give standard dimensions. 8
OR
Draw to scale 1:1, the full sectional front view of a Single Riveted Lap Joint for 16mm thick plates. Give standard dimensions.
(b) Sketch free hand the front view, top view and side view of a Feather Key with Gib head at both ends for a shaft of 50mm diameter. Give standard dimensions. 5
OR
Sketch free hand the front view and top view of a 900 Flat Counter Sunk head screw of size M20, keeping its axis vertical. Give standard dimensions.
Sample Question Paper – I :
Value Points :
Q1 Multiple Choice Questions :
(i) c 1
(ii) c 1
(iii) b 1
(iv) d 1
(v) a 1
Q2 (a) ISOMETRIC SCALE : 4
(i) Marking of divisions of 10 mm, including division of first part of 1 mm on true length. 1
(ii)Projections from scale 1:1 to get points on isometric scale, construction of isometric scale. 2
(iii)Printing „True Length/Scale 1:1?, „Isometric Length/Isometric Scale? and marking angles of 30 o & 45o. 1
(b) ISOMETRIC PROJECTION OF A FRUSTUM OF TRIANGULAR PYRAMID: 7
(i) Drawing helping figure of both triangles. 11/2
(ii) Drawing isometric triangles, on top and at the base. 2
(iii) Drawing slant edges. 1
(iv) Marking the vertical axis, direction of viewing. 1
(v) Dimensions. 11/2
(c) ISOMETRIC PROJECTION OF COMBINATION OF SOLIDS: 13
(i) Helping figure 1
(ii) Drawing isometric pentagons of prism 3
(iii) Drawing horizontal lines indicating the faces of prism 2
(iv) Drawing ellipse of base of cone 2
(v) Drawing generators of cone 2
(vi) Axis, direction of viewing 1
(vii) Dimensioning 2