B.Tech I Semester (R20) Regular Examinations

November 2023

ENGINEERING GRAPHICS (ECE, CSE, IT, MECH & CE)

Time: 3 hours

Max. Marks: 70

Note: Answer all FIVE questions. All questions carry equal marks.

1. The major and minor axes of an ellipse are 120 mm and 80 mm respectively. Construct the ellipse by using arcs of circles method. Draw a tangent and normal to the ellipse at a point on it 25 mm above the major axis.

   OR

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   A circle of 50 mm diameter rolls along a straight line without slipping. Draw the curve traced by a point P on the circumference for one complete revolution of the circle. Draw a tangent and normal to the curve at a point 40 mm from the line.

2. A point P is 20 mm above the H.P. and 30 mm in front of the V.P. Another point Q is 40 mm below the H.P. and 20 mm behind the V.P. The distance between the projectors parallel to XY is 80 mm. Draw the projections of the line joining P and Q. Determine its true length, inclinations with the H.P. and V.P.

   OR

   A line AB is 75 mm long. Its one end A is in H.P. and 25 mm in front of the V.P. The line is inclined at 30° to the H.P. and 60° to the V.P. Draw its projections.

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3. A rectangular plate of size 60 mm x 40 mm has one of its shorter edges in the H.P. and inclined at 40° to the V.P. Draw its top view, if its front view is a square.

   OR

   Draw the projections of a circle of 50 mm diameter resting on the H.P. on a point A on the circumference, its plane is inclined at 45° to the H.P. and

   (i) The top view of the diameter AB makes 60° with the V.P.

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4. Draw the isometric view of a hexagonal prism, with side of base 30 mm and axis 65 mm long, resting on one of its base on the H.P. with an edge of the base parallel to the V.P.

   OR

   Draw the isometric view of a square pyramid of base side 40 mm and altitude 65 mm when the axis is vertical and a side of the base is parallel to VP.

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5. Draw the following orthographic views of the given object shown below.

   1. Front View
   2. Top View
   3. Side View

   [Note: The actual PDF likely contains an image here; replace "image.png" with the correct path or embed the image if available.]

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   OR

   Draw the following orthographic views of the given object shown below.

   1. Front View
   2. Top View
   3. Side View

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   [Note: The actual PDF likely contains an image here; replace "image2.png" with the correct path or embed the image if available.]

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