### Model Question Paper | Diploma in Mechanical Engineering | Diploma 2020

Model Question Paper

Diploma in Mechanical Engineering

1st semester

Course title: Engineering Graphics-I (Conventional)

##### Time; 4 Hrs.                                                                                                     Max. marks:100

Note: Part –A is compulsory. Answer ANY TWO full questions from Part-B,C& D

Part –A

1.(a)List the standard sizes of the drawing sheets.                                                                                                                                                                       -- 05 (b)Mention the types of lines and their applications.                                                                                   --05

Part –B

1.Draw an ellipse when the distance of focus from the directrix is 40and Eccentricity is ¾.-15

2.A Stone thrown from the ground level reaches a maximum height of 45 metre and falls on the ground at a distance of 100metre from the point of projection. Trace the path of the stone in space.  Select a scale of 1:1000                                                                    ---15

3.Draw the involute of a circle of diameter 50mm . Also draw a tangent and normal ---15 at any point on the curve.

PART- C

1.  Draw the projections of the following points on a common reference line: a)Point P is 25mm above the HP and 40mm behind the VP

a) Point Q is 30mm below the HP and 40mm behind the VP

b)  Point R is 25mm above the HP and in the VP.

c) Point S is 30mm below the HP and in the VP

d)        Point T is 35mm in front of the VP and in the HP.

--- 15

2.  A line AB measuring 70mm has its end A is 15mm in front of VP and 20mm above HP. And the other end B is 60mm in front of VP and 50mm above HP.

Draw the projections of the line and find the Inclinations of the line with both the reference planes of projection.

--- 15

3.A line PQ has its end P 15mm above HP and 10mm in front of VP. The end Q is 55mm above HP and the line is inclined at 30° to HP. The distance between the end projectors

of the line. When measured parallel to the line of intersection of HP and VP is 50mm. Draw the Projections of line and find its inclination with VP.                                                                       ---15

PART-D

1. Apentagonal plane lamina of edges 20mm is resting on HP with one of its corners

touching it such that the plane surface makes an angle of 60° with HP. The two of the base  edges containing the corner on which the lamina rests make equal inclination with HP. If the edge opposite to this corner makes an angle of 45° with the VP. Draw the top and front views of the plane lamina in this position.                                                                                         --15

2.  A equilateral triangular lamina of 30mm side lies with one of its edges on HP such that The surface of the lamina is inclined to the HP at 60°. The edge on which it rests is

inclined to the VP at 60°.  Draw the projections.                                                                                                                                  --15

A circular lamina of 60mm diameter rests on HP such that the surface of the lamina is inclined at 30° to HP. The diameter through which the point on which the lamina rests on HP appears to be inclined at 30° to VP in the top view.  Obtain its projections.