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Code: 15A03101b

B.Tech I Year I Semester (R15) Regular & Supplementary Examinations December 2017

ENGINEERING DRAWING

(Computer Science and Engineering)

Time: 3 hours Max. Marks: 70

(Answer all five units, 05 X 14 = 70 Marks)

*****

UNIT ? I

1 The major and minor axes of an ellipse are 125 mm and 100 mm respectively. Draw the curve by

concentric circles method and locate its foci. Also determine the eccentricity. Also, draw a tangent and

normal to the curve through a point P, when it is situated at a distance of 30 mm from axis and lying on

the curve.

OR

2 Draw a Hyperbola when the asymptotes are inclined at 60 to each other and it passes through a point

P at a distance of 40 mm and 50 mm from the asymptotes.

UNIT ? II

3 An area of 144 sq.cm on a map represents an area of 36 sq.km on the field. Find the R.F of scale for

this map and draw a diagonal scale to show kilometer, hectameter and decameter so as to measure up

to 7 km. Indicate on it a distance of 6.56 km.

OR

4 (a) Draw the projections of the following points on the same reference line, keeping the projectors 30 mm

apart.

(i) A, 30 mm above HP and 30 mm infront of VP.

(ii) B, 45 mm below HP and 30 mm behind VP.

(iii) C, 40 mm above HP and in the VP.

(iv) D, 40 mm infront of VP and in HP.

(b) A point P is 15 mm above H.P and 20 mm infront of the V.P. Another point Q is 25 mm behind the V.P

and 40 mm below the H.P. Draw projections of P and Q keeping the distance between their end

projectors equal to 90 mm. Draw straight lines joining: (i) Top views. (ii) Front views.

UNIT ? III

5 (a) The end A of a line AB is in the H.P and 25 mm in front of the V.P. The end B is in the V.P and 50 mm

above the H.P. The distance between the end projectors is 65 mm. Draw the projections of AB and

determine its true length.

(b) A straight line is parallel to both VP and HP. Its one end is 25 mm behind VP and 15 mm above HP.

Length of the line is 10 m. Draw its projection.

OR

6 Draw the projections of a circle of 50 mm diameter resting in the H.P on a point A on the circumference,

its plane inclined at 45 degrees to the H.P and the diameter AB making 30 degrees angle with the V.P.

UNIT ? IV

7 Draw the projections of a pentagonal prism, base 25 mm side and axis 50 mm long, resting on one of its

rectangular faces on the H.P with the axis inclined at 45 to the V.P.

OR

8 Draw the development of the lateral surface of the pentagonal prism which is cut at an angle 45 with

the horizontal and passing the center of the height of the prism. The base side is 25 mm and height is

80 mm and one of the base side is parallel to V.P.

Contd. in page 2

Page 1 of 2

R15

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Code: 15A03101b

B.Tech I Year I Semester (R15) Regular & Supplementary Examinations December 2017

ENGINEERING DRAWING

(Computer Science and Engineering)

Time: 3 hours Max. Marks: 70

(Answer all five units, 05 X 14 = 70 Marks)

*****

UNIT ? I

1 The major and minor axes of an ellipse are 125 mm and 100 mm respectively. Draw the curve by

concentric circles method and locate its foci. Also determine the eccentricity. Also, draw a tangent and

normal to the curve through a point P, when it is situated at a distance of 30 mm from axis and lying on

the curve.

OR

2 Draw a Hyperbola when the asymptotes are inclined at 60 to each other and it passes through a point

P at a distance of 40 mm and 50 mm from the asymptotes.

UNIT ? II

3 An area of 144 sq.cm on a map represents an area of 36 sq.km on the field. Find the R.F of scale for

this map and draw a diagonal scale to show kilometer, hectameter and decameter so as to measure up

to 7 km. Indicate on it a distance of 6.56 km.

OR

4 (a) Draw the projections of the following points on the same reference line, keeping the projectors 30 mm

apart.

(i) A, 30 mm above HP and 30 mm infront of VP.

(ii) B, 45 mm below HP and 30 mm behind VP.

(iii) C, 40 mm above HP and in the VP.

(iv) D, 40 mm infront of VP and in HP.

(b) A point P is 15 mm above H.P and 20 mm infront of the V.P. Another point Q is 25 mm behind the V.P

and 40 mm below the H.P. Draw projections of P and Q keeping the distance between their end

projectors equal to 90 mm. Draw straight lines joining: (i) Top views. (ii) Front views.

UNIT ? III

5 (a) The end A of a line AB is in the H.P and 25 mm in front of the V.P. The end B is in the V.P and 50 mm

above the H.P. The distance between the end projectors is 65 mm. Draw the projections of AB and

determine its true length.

(b) A straight line is parallel to both VP and HP. Its one end is 25 mm behind VP and 15 mm above HP.

Length of the line is 10 m. Draw its projection.

OR

6 Draw the projections of a circle of 50 mm diameter resting in the H.P on a point A on the circumference,

its plane inclined at 45 degrees to the H.P and the diameter AB making 30 degrees angle with the V.P.

UNIT ? IV

7 Draw the projections of a pentagonal prism, base 25 mm side and axis 50 mm long, resting on one of its

rectangular faces on the H.P with the axis inclined at 45 to the V.P.

OR

8 Draw the development of the lateral surface of the pentagonal prism which is cut at an angle 45 with

the horizontal and passing the center of the height of the prism. The base side is 25 mm and height is

80 mm and one of the base side is parallel to V.P.

Contd. in page 2

Page 1 of 2

R15

Code: 15A03101b

UNIT ? V

9 A hexagonal prism with a 30 mm base and 45 mm axis has an axial hole with a 30 mm diameter. Draw

its isometric projection.

OR

10 Draw the front, top and both side views of the isometric projection given in figure below. All dimensions

are in mm.

*****

Page 2 of 2

R15

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This post was last modified on 11 September 2020