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# B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2012. (AN)

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Page 1 of 36 B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2012. (AN) First Semester GE 2111 — ENGINEERING GRAPHICS (Common to all branches) (Regulations 2008) Time : Three hours Maximum : 100 marks Answer ALL questions (5 x 20 = 100) 1. (a) Draw the locus of a point P which moves in a plane in such a way that the ratio of its distances from a fixed point F and a fixed straight line AB is always 2/3. The distance between the fixed point F and fixed straight line is 50 mm. Also draw a tangent and normal on a point on the locus at a horizontal distance of 55 mm from the fixed straight line. (20) www.Vidyarthiplus.com www.Vidyarthiplus.com
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B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2012. (AN)

First Semester GE 2111 — ENGINEERING GRAPHICS

(Common to all branches) (Regulations 2008)

Time : Three hours Maximum : 100 marks Answer ALL questions

(5 x 20 = 100)

1. (a) Draw the locus of a point P which moves in a plane in such a way that the ratio of its distances from a fixed point F and a fixed straight line AB is always 2/3. The distance between the fixed point F and fixed straight line is 50 mm. Also draw a tangent and normal on a point on the locus at a horizontal distance of 55 mm from the fixed straight line. (20)

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Or

(b) Draw the free hand sketches of the Front View, Top view and Right side view of the machine component given below in figure. l(b) : (20)

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2. (a) A line PQ measuring 70 mm is inclined to H.P. at 30° and to V.P. at 45° with the end P 20 mm above H.P. and 15 mm in front of V.P. Draw its projections. (20)

Or (b) A rectangular plate of side 50 x 25 mm is resting on its shorter side on H.P. and inclined at 30° to V.P. Its surface is inclined at 60° to H.P. Draw its projections. (20)

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3. (a) Draw the projections of a pentagonal prism of 30 mm base edges and axis 60 mm long when the axis is inclined at 75° to the H.P. and parallel to the V.P. with an edge of the base on the H.P. (20)

Or

(b) A right regular hexagonal pyramid, edge of base 25 mm and height 50 mm, rests on one of its base edges on H.P. with its axis parallel to V.P. Draw the projections of the pyramid when its base makes an angle of 45° to the H.P. (20)

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4. (a) A square pyramid base 40 mm side and axis 65 mm long has its base on H.P. and all the edges of the base are equally inclined to V.P. It is cut by a section plane perpendicular to V.P. and inclined at 45° to H.P. and-bisecting the axis. Draw its sectional top view, and the true shape of the section. (20)

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Or

(b) Draw the development of the lateral surface of the lower portion of a cylinder of

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diameter 50 mm and axis 70 mm. The solid is cut by a section plane inclined at 40° to H.P. and perpendicular to V.P. and passing through the midpoint of the axis. (20)

5. (a) Draw the isometric projection of the object from the views shown in Fig. 5(a). (20)

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(b) A rectangular pyramid, base 30 mm x 20 mm and axis 35 mm long, is placed on the ground plane on its base, with the longer edge of the base parallel to and 30 mm behind the picture plane. The central plane is 30 mm to the left of the apex and station point is 50 mm in front of the picture plane and 25 mm above the ground plane. Draw the perspective view of the pyramid. (20)

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B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2012.(FN) First Semester

GE 2111 — ENGINEERING GRAPHICS (Common to all branches) (Regulations 2008)

Time : Three hours Maximum : 100 marks Answer ALL questions.

(5 x 20 = 100 marks) 1. (a) Draw the involute of a circle of diameter 50 mm when a string is unwound in the

clockwise direction. Draw a tangent and normal at a point located on the involute. (20)

Or

(b) Make free hand sketches of the front, top and right side views of the object shown below in Fig. 1 (b). (20)

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2. (a) The front view of a line AB 90 mm long is inclined at 45° to XY line. The front view measures 65 mm long. Point A is located 15 mm above H.P. and is in V.P. Draw the projections and find its true inclinations. (20)

Or

(b) A hexagonal lamina of side 30 mm rests on one of its edges on H.P. This edge is parallel to V.P. The surface of the lamina is inclined 60° to H.P. Draw its projections. (20)

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3. (a) A hexagonal prism of side of base 25 mm and axis 60 mm long, is freely

suspended from a corner of the base. Draw the projections by the change of Position method. (20)

Note In final front view a’g’ should be perpendicular &

In final top view 3 lines invisible

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Or

(b) A cylinder, diameter of base 60 mm and height 70 mm, is having a point of its periphery of base on H.P. with axis of the cylinder inclined to H.P. at 45° and parallel to V.P. Draw the projections of the cylinder. (20)

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4. (a) A cone of base 75 mm diameter and axis 80 mm long is resting on its base on the H.P. It is cut by a section plane perpendicular to the V.P. and parallel to and 12 mm away from one of its end generators. Draw its front view, sectional top view and true shape of the section. (20)

Or

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(b) A regular hexagonal pyramid side of base 30 mm and height 60 mm is resting vertically on its base on H.P. such that two of its sides of the base are perpendicular to V.P. It is cut by a plane inclined at 40° to H.P. and perpendicular to V.P. The cutting plane bisects the axis of the pyramid. Obtain the development of the lateral surface of the truncated pyramid.(20)

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5. (a) A cone of diameter of base 60 mm and height 65 mm rests with its base on H.P. A cutting plane perpendicular to V.P. and inclined at 30° to H.P. cuts the cone such that it passes through a point on the axis at a distance of 30 mm above the base of the cone. Draw the isometric projection of the truncated cone showing the cut surface. (20)

Or

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(b) A square prism of base 25 x 25 mm and height 40 mm is resting on the GP on its-square base with a right side rectangular face making 60° with Picture Plane. The corner nearest to the PP is 40 mm to the left of the station point and 20 mm behind the PP. The station point is 60 mm above the GP and 50 mm in front of the PP. Draw the Perspective view of the prism by using Visual Ray Method.

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B.E./B.Tech.Degree Examinations, April/May 2011

Regulations 2008

First Semester

Common to all branches

GE2111 Engineering Graphics

Time: Three Hours Maximum: 100 marks

Answer ALL Questions (5 x 20= 100 marks) 1. (a) The focus of a conic is 50 mm from the directrix. Draw the locus of a point 'P’

moving in such a way that its distance from the directrix is equal to its distance from the focus. Name the curve. Draw a tangent to the curve at a point 60 mm from the directrix. (20)

OR

1. (b) Figure 1(b) shows a pictorial view of a Machine Component. Draw the free hand sketches of the following views using first angle method of projection. (20) • Front view • Top view and • Right side view

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2. (a) The end P of a line PQ is 30 mm above HP and 35 mm in front of VP. The line is inclined at 35° to the HP. Its top view is 70 mm long and inclined at 40° to XY. Draw the projections of the straight line. Find the true length and inclination of the line with the VP. (20)

OR

2. (b) A circular plate of 60 mm diameter has a hexagonal hole of 20 mm sides centrally punched. Draw the projections of the lamina resting on the HP with its surface inclined at 30° to the HP and the diameter through the point on which the lamina rests on HP is inclined at 50° to VP. Any two parallel sides of the hexagonal hole are perpendicular to the diameter of the circular plate passing through the point on which it rests. Draw the projections. (20)

3. (a) A cone, diameter of base 55 mm and height 60 mm, is resting on H.P. on one of its generators with axis parallel to V.P. Draw the projections of the cone. (20)

OR

3. (b) Draw the top and front views of a rectangular pyramid of sides of base 20 x 25 mm and height 35 mm when it lies with one of its triangular faces containing the longer edge of the base on HP. This longer edge containing the triangular face lying on HP is perpendicular to VP. (20)

4. (a) A square pyramid of base side 25 mm and height 40 mm rests on HP with its base edges equally inclined to VP. It is cut by a plane perpendicular to VP and inclined at 30° to HP meeting the axis at 21 mm from the base. Draw the sectional top view and true shape of the section. (20)

OR

4. (b) Draw the development of the lower portion of a cylinder of diameter 50 mm and axis 70 mm when sectioned by a plane inclined at 40° to H.P and perpendicular to V.P and bisecting the axis. (20)

5. (a) A cylinder of diameter of base 60 mm and height 70 mm rests with its base in HP. A section plane perpendicular to VP and inclined at 45° to HP cuts the cylinder such that it passes through a point on the axis 50 mm above the base. Draw the isometric projection of the truncated cylinder showing the cut surface. (20)

OR 5. (b) A rectangular pyramid of sides of base 30 mm and 20 mm and height 35 mm rests

with its base on the ground such that one of the longer base edges is parallel to the picture plane and 30 mm behind it. The station point is 50 mm in front of the picture plane, 30 mm to the left of the axis of the pyramid and 50 mm above the ground. Draw the perspective view of the pyramid. (20)

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B.E./B.Tech. DEGREE EXAMINATION, JANUARY 2011.(AN)

First Semester

Common to All Branches

185101 — ENGINEERING GRAPHICS

(Regulation 2010) Time : Three hours Maximum : 100 marks

(5 x 20 = 100 Marks)

1. (a) Draw a hypocycloid of a circle of 40 mm diameter that rolls inside another circle of 200 mm diameter for one revolution. Draw tangent and Normal at any point on the curve.

Or

(b) Make free hand sketches of the front, top and left side view of the object shown below.

2. (a) A line LM 70 mm long has its end L 10 mm above HP and 15 mm in front

of VP Its top view and front view measures 60 mm and 40 mm respectively. Draw the projections of the line and determine its inclinations with HP and VP.

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Or

(b) A hexagonal plate of side 25 mm is resting on HP such that one of its corners touches both HP and VP. Its surface makes 30 degrees with HP and 60 degrees with VP Draw the projections of the plate.

3. (a) A Pentagonal prism, side of base 25 mm and axis 50 mm long rests with one of its shorter edges on HP such that the base containing that edge makes an angle of 30° to HP and its axis is parallel to VP. Draw its projections.

Or

(b) A Hexagonal pyramid of 26 mm side of base and 70 mm height rests on HP on one of its base edges such that the triangular face containing the resting edge is perpendicular to both HP and VP. Draw its projections.

4. (a) Square prism side of base 30 mm and axis 60 mm long rests with its base on HP and one of its rectangular faces is inclined at 30° to VP. A sectional plane perpendicular to VP and inclined at 60° to HP cuts the axis of the prism at a point 20 mm from its top end. Draw the sectional top view and the true shape of section.

Or (b) A monument is in the form of frustum of a square pyramid of base 1.2 m side, top

0.5 m side and height 1.0 m. An electrical connection is to be made along the surface of this monument between one corner of the base and diagonally opposite corner on the top. Find the shortest length of the wire required and show the position of the wire in the top and front views.

5. (a) A hexagonal prism side of base 25 mm and height 50 mm rests on HP and one

of the edges of its base is parallel to VP. A section plane perpendicular to VP and inclined at 50° to HP bisects the axis of the prism. Draw the isometric projection of the truncated prism.

Or (b) A square prism of side base 30 mm and height 50 mm rests with its base on the

Ground and one of the rectangular faces inclined at 30° to the PP. The nearest vertical edge touches the PP. The station point is 60 mm above the GP, 45 mm in front of the PP and opposite to the nearest vertical edge that touches the PP. Draw the perspective view of the square prism.

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B.E./B.Tech. DEGREE EXAMINATION, JANUARY 2011.(FN)

First Semester

Common to all Branches

185101 — ENGINEERING GRAPHICS

(Regulation 2010) Time : Three hours Maximum : 100 marks

(5 x 20 = 100 Marks) 1. (a) A circular wheel of 50mm diameter rolls without slipping along a straight line.

Draw the curve traced by a point ‘P' on its rim for one revolution of the wheel. Draw tangent and normal at any point M on the curve.

Or (b) Draw by freehand the front view, top view and a suitable side view of the object shown below.

2. (a) The end A of a line AB is 16mm above HP and 20 mm in front of VP, while the end B is 60 mm above HP and 50 mm in front of VP. If the end projectors are at a distance of 70 mm, find the true length and true inclinations of the line. Also draw the traces.

Or (b) A pentagonal lamina of side 35mm is resting upon its edge on HP, so that the

surface is inclined at 45° to HP. The line joining the midpoint of the resting edge

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to the opposite corner is inclined at 30° to the VP such that the resting edge is away from VP. Draw the projections of the lamina.

3. (a) A hexagonal prism of base side 35mm and height 60mm rests with one of

its rectangular faces on HP. If the axis is inclined at 30° to VP draw its projections.

Or

(b) A pentagonal pyramid has an altitude of 60mm and base side 35mm. The pyramid rests with one of its sides of the base on HP such that the triangular face containing that side is perpendicular to both HP and VP.

4. (a) A pentagonal pyramid of base side 40mm and height 80mm rests on the

base such that one base edge is perpendicular to VP. It is cut by a section plane inclined at 45° to HP and passing through the mid-point of the axis removing the apex. Draw the front view, sectional top view and true shape of the section.

Or (b) A cone of base diameter 80mm and axis height 80mm rests on the HP on its base.

A square hole of side 40mm is cut horizontally through the cone such that the axis of the hole and the square intersect at a height of 16mm from the base. If the sides of the hole are equally inclined to the HP, draw the development of the lateral surface of the cone.

5. (a) Draw the isometric view of the frustum of a hexagonal pyramid when it

is resting on its base on the HP with two sides of the base parallel to the VP. The pyramid has base side of 30 mm and top side of 10mm. The height of the frustum is 60 mm.

Or (b) Draw the perspective view of a pentagonal prism of base side 30 mm and height 50

mm when it rests on its base on the ground plane with one of its rectangular faces parallel to and 20 mm behind the picture plane. The station point is 45mm in front of the picture plane and 60 mm above the GP. The observer is 20 mm to the left of the axis. Using the top view and the end view draw the perspective view of the prism using visual ray method.

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B.E./B.Tech. DEGREE EXAMINATIONS, MAY/JUNE 2010

Regulations 2008

First Semester

Common to all branches

GE2111 Engineering Graphics

Time: Three Hours Maximum: 100 Marks

Answer ALL Questions (5 x 20

= 100 Marks)

1. (a) Draw the locus of a point P which moves in a plane in such a way that the ratio of its distances from a fixed point F and a fixed straight line AB is always 2/3. The distance between the fixed point F and fixed straight line is 50 mm. Also draw a tangent and normal on a point on the locus at a horizontal distance of 55 mm from the fixed straight line. (20)

OR

f. (b) Draw free hand sketches of the front, top and right side views of the object shown in Fig. 1(b). (20)

2. (a) The projections of a line measures 80 mm in the top view and 70 mm in the

front view. The mid point of the line is 45 mm in front of VP and 35 mm

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above HP. One end is 10 mm in front of VP and nearer to it. The other end is nearer to HP. Draw the projections of the line. Find the true length and true inclinations. (20)

OR

2. (b) A square lamina ABCD of 40 mm side rests on the corner C such that the diagonal AC appears to be at 30° to the VP in the top view. The two sides BC and CD containing the corner C make equal inclinations with the HP. The surface of the lamina makes 45° with HP. Draw the top and front views. (20)

3. (a) Draw the projections of a cone of base diameter 50 mm and axis of length 70 mm resting on the ground on one of its generators with the axis of cone parallel to VP. (20)

OR

3. (b) A right regular hexagonal pyramid, edge of base 25 mm and height 50 mm, rests on one of its base edges on HP with its axis parallel to VP. Draw the projections of the pyramid when its base makes an angle of 45° to the HP.

(20)

4. (a) A square pyramid of base side 25 mm and height 40 mm rests on HP with its base edges equally inclined to VP. It is cut by a plane perpendicular to VP and inclined at 30° to HP meeting the axis at 21 mm from the base. Draw the sectional top view and true shape of the section. (20)

OR

4. (b) A vertical hexagonal prism of 30 mm side of base and axis 65 mm long has one of its rectangular faces parallel to VP and nearer to it. A circular hole of 40 mm diameter is drilled through the prism completely such that the axis of the hole bisects the axis of the prism at right angles and is perpendicular to VP. Draw the development of the prism showing the shape of the hole on it. (20)

5. (a) A right circular cone of diameter 30 mm base and height 36 mm rests centrally on top of a square block of 48 mm side and 22 mm thick. Draw the isometric projection of the two solids. (20)

OR 5. (b) A pentagonal pyramid side of base 25 mm and height 50 mm rests with one of its corner

of the base touching the picture plane and the base edges passing through this corner making equal inclinations with the picture plane. The station point is on the central line, 100 mm in front of the picture plane and 75 mm above the ground. Draw the perspective view of the pyramid. (20)

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B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2010 (FN) Regulations 2008

First Semester

Common to all branches

GE2111 ENGINEERING GRAPHICS

Time: Three Hours Maximum: 100 Marks

Answer ALL Questions (5 x 20 = 100 Marks)

1. (a) The focus of a conic is 50 mm from the directrix. Draw the locus of a point 'P' moving in such a way that its distance from the directrix is equal to its distance from the focus. Name the curve. Draw a tangent to the curve at a point 60 mm from the directrix. (20)

OR 1. (b) Make free hand sketches of the front, top and right side views of the object shown below : (20)

2. (a) The projections of a line measures 80 mm in the top view and 70 mm in the front view. The mid point of the line is 45 mm in front of VP and 35 mm above HP. One end is

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10 mm in front of VP and nearer to it. The other end is nearer to HP. Draw the projections of the line. Find the true length and true inclinations. (20)

OR 2. (b) Draw the projections of a circle of 70 mm diameter resting on the H.P. on a point A of the circumference. The plane is inclined to the H.P. such that the top view of it is an ellipse of minor axis 40 mm. The top view of the diameter, through the point A is making an angle of 45° with the V.P. Determine the inclination of the plane with the H.P. (20) 3. (a) An equilateral triangular prism 20 mm side of base and 50 mm long rests with one of its shorter edges on HP such that the rectangular face containing the edge on which the prism rests is inclined at 30° to H.P. The shorter edge resting on HP is perpendicular to VP. (20)

OR 3. (b) Draw the projections of a hexagonal pyramid with side of the base 30 mm and axis 70 mm long, when it is resting with one of the base sides on HP such that the triangular face containing that side is perpendicular to HP and axis is parallel to VP.(20) 4. (a) A vertical cylinder 40 mm diameter is cut by a vertical section plane making 30° to VP in such a way that the true shape of the section is a rectangle of 25 mm and 60 mm sides. Draw the projections and true shape of the section. (20)

OR 4. (b) A regular hexagonal pyramid side of base 30 mm and height 60 mm is resting vertically on its base on HP, such that two of its sides of the base are perpendicular to VP. It is cut by a plane inclined at 40° to HP and perpendicular to VP. The cutting plane bisects the axis of the pyramid. Obtain the development of the lateral surface of the truncated pyramid. (20) 5. (a) A cylinder of 50 mm diameter and 75 mm height stands with its base on H.P. It is cut by a section plane inclined at 45° to H.P and perpendicular to V.P, passing through a point on the axis 20 mm below the top end. Draw the isometric projection of the truncated cylinder. (20)

OR 5. (b) Draw the perspective projection of a cube of 25 mm edge, lying on a face on the ground plane, with an edge touching the picture plane and all vertical faces equally inclined to the picture plane. The station point is 50 mm in front of the picture plane, 35 mm above the ground plane and lies in a central plane which is 10 mm to the left of the center of the cube. (20)

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B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 2010(AN)

Regulations 2008

First Semester Common to all branches

GE2111 ENGINEERING GRAPHICS

Time: Three Hours Maximum: 100 Marks

Answer ALL Questions (5 x 20 = 100 Marks)

1. (a) Draw a hyperbola when the distance between its focus and directrix is 50 mm and eccentricity is 3/2. Also draw the tangent and normal at a point 25 mm from the directrix. (20)

OR 1. (b) Make free hand sketches of front, top and right side views of the 3D object shown below : (20)

2. (a) A line PQ has its end P, 10 mm above the HP and 20 mm in front of the VP. The end Q is 35 mm in front of the VP. The front view of the line measures 75 mm. The distance

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between the end projectors is 50 mm. Draw the projections of the line and find its true length and its true inclinations with the VP and HP. (20)

OR 2. (b) Draw the projections of a circle of 70 mm diameter resting on the H.P. on a point A of the circumference. The plane is inclined to the H.P. such that the top view of it is an ellipse of minor axis 40 mm. The top view of the diameter, through the point A is making an angle of 45° with the V.P. Determine the inclination of the plane with the H.P. (20) 3. (a) An equilateral triangular prism 20 mm side of base and 50 mm long rests with one of its shorter edges on HP such that the rectangular face containing the edge on which the prism rests is inclined at 30° to H.P. The shorter edge resting on HP is perpendicular to VP. (20)

OR 3. (b) A square pyramid of base 40 mm and axis 70 mm long has one of its triangular faces on VP and the edge of base contained by that face perpendicular to HP. Draw its projections. (20) 4. (a) A hexagonal prism of side of base 35 mm and axis length 55 mm rests with its base on H.P such that two of the vertical surfaces are perpendicular to V.P. It is cut by a plane inclined at 50° to H.P and perpendicular to V.P and passing through a point on the axis at a distance 15 mm from the top. Draw its front view, sectional top view and true shape of section. (20)

OR 4. (b) Draw the development of the lateral surface of the lower portion of a cylinder of diameter 50 mm and axis 70 mm. The solid is cut by a section plane inclined at 40° to HP and perpendicular to VP and passing through the midpoint of the axis. (20) 5. (a) Draw the isometric projection of the object from the views shown in Figure(20)

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OR

5 (b) Draw the perspective projection of a cube of 25 mm edge , lying a face on the ground plane, with an edge touching the picture plane and all vertical faces equally inclined to the picture plane. The station point is 50 mm m front of the picture plane, 35 mm above the ground plane and lies in a central plane which is 10 mm to the left of the center of the cube. (20)

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B.E./B.Tech. DEGREE EXAMINATION, MAY/JUNE 2009.

First Semester Civil Engineering

GE 2111 —ENGINEERING GRAPHICS

(Common to all branches of B.E./B.Tech) (Regulation 2008)

Time: Three hours Maximum.: 100 marks

Answer ALL questions. (5 x 20 =. 100)

1.(a) Draw the involute of a circle of diameter 40 mm and draw the tangent and the normal to the involute at any point on the curve. (20)

OR (b) Draw the front, top and right side views of the object shown in below. (20)

2. (a) A line PF, 65 mm has its end P, 15 mm above the HP and 15 mm in front of the VP. It is inclined at 55° to the HP and 35° to the VP. Draw its projections. (20)

Or (b) A pentagon of side 30 mm rests on the ground on one of its corners with the sides containing the corner being equally inclined to the ground. The side opposite to the corner on which it rests is inclined at 30° to the VP and is parallel to the HP. The surface of the pentagon makes 50° with the ground. Draw the top and; front views of the pentagon. (20) 3. (a) A tetrahedron of edges 30 mm rests on one of its edges on the VP. That edge is normal to the HP. One of the faces containing the cresting edge is inclined at 30° to the VP. Draw the projections of the tetrahedron. (20)

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Or (b) A cone of base diameter 60 mm and altitude 80 mm rests on the HP with its axis inclined at 300 to the HP and parallel to the VP. Draw its front and top views. (20) 4. (a) A cube of side 40 mm is .placed and cut by a plane in such a way that the true shape of the section is a regular hexagon. Draw the front and top views of the cube and determine the inclination of the cutting plane with the HP. (20)

Or (b) A cylinder of diameter 40 mm and height 50mm is resting vertically on one of its ends on the HP. It is cut by a plane perpendicular to the VP and inclined at 30° to the HP. The plane meets the axis at a point 30 mm from the base. Draw the development of the lateral surface of the lower portion of the truncated cylinder. (20) 5. (a) A hexagonal prism of base side 20 mm and height 40 mm has a square hole of side 16 mm at the centre. The axes of the square and hexagon coincide. One of the faces of the square hole is parallel to the face of the hexagon. Draw the Isometric projection of the prism with hole to full scale. (20)

Or (b) A regular hexagonal, pyramid of base edge 20 mm and height 35 mm rests on its base oh the ground plane with one of its base edges touching the picture plane. The station point is 30 mm above the ground plane and 40 mm in front of the PP. The central plane is 30 mm to the right of the Draw the perspective projection of the pyramid. (20)

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B.E/B.Tech. DEGREE EXAMINATION, JANUARY 2009

First Semester

GE 2111 — ENGINEERING GRAPHICS (Common to all Branches of B.E/B.Tech) (Regulation 2008)

Time : Three hours Maximum : 100 marks

Answer ALL questions. 1. (a) Draw the conic curve, if the distance of focus from the directrix is 70mm and the eccentricity is ¾. Also draw a tangent and a normal at any point on the curve.

Or (b) Draw by freehand, front view (from x), top view and a suitable side view of the object shown in fig.l Add necessary dimensions of the part.

2. (a) A line CD, inclined at 25° to the HP, measures 80mm in top view. The end C is in the first quadrant and 25 mm and 15 mm from the HP and the VP respectively. The end D is at equal distances from both the reference planes. Draw the projections, find true length and true inclination with the VP.

Or (b) A regular pentagonal lamina ABCDE of side 30mm has one of its edges parallel to the VP and inclined at 30° to the HP. The pentagon is inclined at 45° to the VP. Draw the projections.

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3. (a) A pentagonal prism of 30 mm side of base and 70 mm height is resting on one of its edges of the base in such a way that the base makes an angle of 45°with HP, and the axis is parallel to VP. Draw the projections of the prism.

Or (b) Draw the top and front views of a right circular cylinder of base 45 mm diameter and 60 mm long when it lies on HP, such that its axis is inclined at 30° to HP and the axis appears to be parallel to the VP in the top view. 4. (a) A cube of 70mm long edges has its vertical faces equality inclined to the VP. It is cut by an auxiliary inclined plane in such a way that the true shape of the cut part is a regular hexagon. Determine the inclination of the cutting plane with the HP. Draw front view, sectional top view and true shape of the section.

Or (b) A right circular cone, 40 mm base and 50mm height, rests on its base on HP. A section plane perpendicular to VP and inclined to HP at 45° cuts the cone bisecting its axis. Draw projections of the truncated cone and develop its lateral surface. 5. (a) A pentagonal pyramid of 40mm edge of base and height 70mm rests with its base on HP. One of the base edges is perpendicular to VP and lies on the left of the axis of the pyramid. A section plane perpendicular to VP and inclined at 30° to HP cuts the axis of the pyramid at a point 30 mm above the base of the pyramid. Draw the isometric projection of the truncated pyramid.

Or (b) A square prism of 25 mm side of base and height 40 mm rests with its base on ground such that one of the rectangular faces is inclined at 30° to the picture plane. The nearest vertical edge touches the picture plane. The station point is 50 mm infront of the picture plane, 60 mm above the ground and lies opposite to the nearest vertical edge that touches the picture plane. Draw the perspective view.

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B.E./B.Tech. DEGREE EXAMINATION, JANUARY 2009.

First Semester Civil Engineering

GE 2111 — ENGINEERING GRAPHICS (Common to All branches of B.E./B.Tech.)

(Regulation 2008) Time : Three hours Maximum: 100 marks

(5x20 = 100)

1. (a) A circle of 50 mm diameter rolls on a horizontal line for ¾ of a revolution clockwise. Draw the path traced by a point P on the circumference of the circle. Also draw a tangent and normal at any point on the curve.

Or (b) Draw the front, top and right side views of the isometric view of the object shown in figure 1.

2. (a) A straight line ST has its end S, 10 mm infront of the VP and nearer to it. The mid-point m of the line is 50 mm infront of the VP and 40 mm above HP. The front and top view measure 90 mm and 120 mm respectively. Draw the projections of the line. Also find its true length and true inclinations with the HP and the VP.

Or

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(b) A regular pentagon of 30 mm side, is resting on one of its edges on HP which is inclined at 45° to VP. Its surface is inclined at 30° to HP. Draw its projections. 3. (a) Draw the projections of a cylinder of diameter 40 mm and axis 70 mm long when it rests on the VP on one of its base points. The axis of the cylinder is parallel to HP and inclined at 30° to VP.

Or (b) A hexagonal pyramid of base side 30 mm and axis length 60 mm is resting on VP on one of its base edges with the face containing the resting edge perpendicular to both HP and VP. Draw its projections. 4. (a) A cone of base diameter 60 mm and axis 70 mm is resting on HP on its base. It is cut by a plane perpendicular to VP and parallel to a contour generator and is 10 mm away from it. Draw the front view, sectional top view and the true shape of the section.

Or (b) A pentagonal pyramid of base edge 25 mm and height 60 mm rests vertically on its base on the HP such that one of its base edge parallel to VP. It is cut by a plane, inclined at 60° to HP and passes through a point 35 mm from the apex. Draw the development of the lateral surface of the pyramid. 5. (a) An object consists of a hemispherical vessel of 80 mm diameter which is placed centrally over a cylinder of 50 mm diameter and height of 60 mm. . The cylinder in turn is placed centrally over a square prism of 60 mm base side and 20 mm height. Draw the isometric projection of the object.

Or (b) Draw the perspective view of a square prism of edge of base 40 mm and length 60 mm lying on a rectangular face on the ground, with a corner on PP and the bases equally inclined to PP. The station point is 60 mm in front of PP and 80 mm above GL and lies in a central plane, which is passing through the centre of the prism.

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