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ENGINEERING GRAPHICS

Time allowed : 3 hours Maximum Marks : 70

Note :

(i) Attempt all the questions.

(ii) Follow the SP: 46-2003 revised codes. (with first angle method of projection)

(iii) Missing and mismatching dimensions, if any, may be assumed suitably.

(iv) All dimensions are in millimeters.

(v) Use the given dimensions in figures.

QUESTION PAPER CODE 68/1

1. Answer the following Multiple Choice Questions. Print the correct choice on your

drawing sheet. 5 × 1 = 5

(i) The type of projection in which the projectors are parallel to each other and

perpendicular to the plane of projection is :

(a) Orthographic Projection

(b) Perspective Projection

(c) Oblique Projection

(d) Central Projection

(ii) A circular plate having a hole in its centre, that provides a flat smooth bearing

surface is called as

(a) Washer

(b) Rivet

(c) Nut

(d) Bolt

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(iii) Which one of the following is having internal threads?

(a) Bolt

(b) Machine screw

(c) Pin

(d) Nut

(iv) A Turnbuckle can be used in

(a) electric poles

(b) cable/guy wires

(c) boxing rings

(d) All of these

(v) Which of the following is an example of reduced scale?

(a) 2: 1

(b) 1: 20

(c) 5: 1

(d) 20: 1

2. (i) Construct an isometric scale. 4

(ii) A frustum of a triangular pyramid (top base edge 40 mm, bottom base edge

60 mm, height 70 mm) is kept with its axis perpendicular to H.P. and one of

its base sides perpendicular to V.P. Draw its isometric projection. Show the

axis and indicate direction of viewing. Give all dimensions. 7

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(iii) A vertical regular hexagonal pyramid (side of hexagon 30 mm, height 60 mm)

having two of its base edges perpendicular to V.P., is placed centrally with its

base resting on the top rectangular face of a horizontal square prism (side of

square 50 mm, length of the prism 80 mm), keeping its two square faces

perpendicular to V.P. Draw the isometric projection of the combination of

solids. Show the axis of each solid and indicate the direction of viewing. Give

all dimensions. 13

3. (i) Draw to scale 1 : 1 the standard profile of a Knuckle thread, taking enlarged

pitch as 40 mm. Give standard dimensions. 8

OR

Draw to scale 1 : 1 the sectional front view of a Single Riveted lap joint for the

plates of thickness 16 mm. Give standard dimensions.

(ii) Sketch freehand the front view and top view of a Stud with square neck of

size M20. The axis is perpendicular to H.P. Give standard dimensions. 5

OR

Sketch freehand the front view and top view of a 60° CSK head rivet of

diameter 25 mm. Keep the axis vertical. Give standard dimensions.

4. Figure-l shows the details of the parts of a Footstep Bearing. Assemble these parts

correctly and then draw the front view, left half in section to a scale 1 : 1. 22

Print title and scale used. Draw the projection symbol. Give 6 important dimensions. 6

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Fig. - 1

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Figure-2 shows the front view of the assembly of a Gib and Cotter Joint for square rods.

Disassemble the parts and then draw the following views of the following parts to scale

1 : 1, keeping the parts in the same position, with respect to H.P. and V.P.

(1) STRAP (FORK) :

(i) Lower half sectional front view 8

(ii) Top view 8

(2) GIB :

(i) Front view 3

(ii) Top view 3

Print titles of both and scale used. Draw the projection symbol. Give 6 important

dimensions. 6

Fig. - 2

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QUESTION PAPER CODE 68

1. Answer the following Multiple Choice Questions. Print the correct choice on your

drawing sheet. 5 × 1 = 5

(i) Section area is shown by

(a) Sketching

(b) Colouring

(c) Hatching/section linings

(d) Dots

(ii) The end of the Stud which is screwed in the body of casting with threaded

hole is called

(a) Nut end

(b) Metal end

(c) Close end

(d) Open end

(iii) In which of the following joints, a single line/row of rivets is used to join two

plates together?

(a) Zigzag joint

(b) Single riveted lap joint

(c) Double riveted lap joint

(d) Multiple riveted joint

(iv) The portion of the shaft which rotates in the sleeve/bush of a bushed bearing

is called as

(a) Journal

(b) Axle

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(c) Rod

(d) Pipe

(v) Protected flange coupling is better than the unprotected flange coupling with regard to

(a) Protection from dirt

(b) Protection from water

(c) Protection from fire hazards

(d) Ensure safety

2. (i) Construct an isometric scale. 4

(ii) Draw the isometric projection of a frustum of a hexagonal pyramid (top base

edge 30 mm, bottom base edge 40 mm, height 60 mm), keeping its axis

perpendicular to H.P. and two of its base sides parallel to V.P. Draw the axis

and indicate the direction of viewing. Give all dimensions. 7

(iii) A right circular cone (base diameter 50 mm, height 50 mm) is placed with its

base resting centrally on the top rectangular face of a horizontal triangular

prism (side of triangle 40 mm, length of the prism 70 mm), keeping triangular

faces of the prism parallel to V.P. Draw, the isometric projection of the

combination of solids.

Show the axis of each solid and indicate the direction of viewing. Give all

dimensions. 13

3. (i) Draw to scale 1 : 1, the standard profile of a B.S.W. thread, taking enlarged

pitch as 40 mm. Give standard dimensions. 8

OR

Draw to scale 1 : 1, the front view and side view of a Hook bolt of size M20,

keeping the axis parallel to V.P and H.P. Give standard dimensions.

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(ii) Sketch freehand the front view of a Socket head machine screw of size M20.

Keep the axis perpendicular to H.P. Give standard dimensions. 5

OR

Sketch freehand the front view, top View and side View of a Woodruff key,

suitable for a shaft of diameter 60 mm. Give standard dimensions.

4. Figure 1 shows the details of the parts of a SLEEVE AND COTIER JOINT.

Assemble these parts correctly, and then draw the following views using scale

1 : 1.

(i) Front view, upper half in section. 14

(ii) Right hand side view. 8

Print the title and the scale used. Draw the projection symbol. Give 6 important

dimensions. 6

OR

Figure 2 shows the assembly of the parts of a FLANGE PIPE JOINT. Disassemble

the parts and then draw the following views of the following components to scale

1 : 1, keeping them in the same position with respect to H.P. and V.P.

(i) FLANGE B :

(a) Front view, upper half in section. 8

(b) Right hand side view. 8

(ii) GASKET:

(a) Full sectional front view. 3

(b) Left hand side view. 3

Print the titles of both and the scale used. Draw the projection symbol. Give 6 important

dimensions. 6

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