# CBSE Question Paper 2018 Class 12 Engineering Graphics

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CBSE Question Paper 2018 Class 12 Engineering Graphics conducted by Central Board of Secondary Education, New Delhi in the month of March 2018. CBSE previous year question papers with the solution are available in myCBSEguide mobile app and website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice papers to CBSE schools in India and abroad.

CBSE Question Paper 2018 Class 12 Engineering Graphics

## CBSE Question Paper 2018 Class 12 Engineering Graphics

Time allowed : 3 hours
Maximum Marks: 70

General Instructions :

1. Attempt all the questions.
2. Use both sides of the drawing sheet, if necessary.
3. All dimensions are in millimeters.
4. Missing and mismatching dimensions, if any, may be suitably assumed.
5. Follow the SP 46: 2003 revised codes (with first angle method of projection).
6. In question 2, no views of hidden edges or lines are required.
7. In question 4, hidden edges or lines are to be shown in views without section.

1. Answer the following Multiple Choice Questions. Print the correct choice on your drawing sheet. ($1 \times 5 = 5$)
1. The truncated lower portion of a pyramid is called
1. Prism
2. Frustum
3. Cube
4. Cone

2. In a single riveted lap joint, the plates to be joined are
1. In contact with each other at the ends
2. Overlapping each other
3. Inclined to each other
4. Kept at a distance of 10 mm from each other
3. Which special type of Sunk key looks like a segment of a circular disc?
1. Woodruff key
2. Feather key
4. Rectangular taper key

4. Which of the following is not a part of an unprotected flange coupling?
2. Shaft
3. Sunk key
4. Flange

5. What is the purpose of crowning on the rim of a solid cast iron pulley?
1. To make the belt slip off the rim
2. To join the shaft with the rim
3. To lubricate the rim
4. To keep the belt in the middle of the rim

1. Construct an isometric scale. (4)
2. A vertical triangular pyramid (base edge 40 mm and axial height 60 mm) is resting on its base on H.P. One of its base edges are perpendicular to V.P. Draw its isometric projection. Show the axis and indicate the direction of viewing. Give all dimensions. (7)
3. A sphere (diameter 50 mm) is placed centrally on the top hexagonal face of a hexagonal prism (base edge 30 mm and height 40 mm). Two base edges of the prism are parallel to V.P. The common axis is perpendicular to H.P. Draw the isometric projection of the combination of solids. Show the common axis and indicate the direction of viewing. Give all dimensions. (13)
1. Draw to scale 1: 1, the standard profile of a B.S.W. Thread, taking the enlarged pitch as 50 mm. Give standard dimensions. (8)OR
1. Draw to scale 1: 1, the front view and side view of a Square Headed Bolt of diameter 25 mm, keeping the axis vertical. Give standard dimensions.
2. Sketch freehand the front view and top view of a Grub Screw of size M20, keeping the axis vertical. Give standard dimensions. (5)ORSketch freehand the front view and top view of a Flat Head Rivet of diameter 25 mm, keeping the axis vertical. Give standard dimensions.
2. Figure-1 shows the details of parts of a Socket and Spigot Cotter Joint. Assemble these parts correctly and then draw the following views using scale 1: 1.
1. Front view, upper half in section. (14)
2. Side view, looking from the left. (8)
Print the title and scale used. Draw the projection symbol. Give 6 important dimensions. (6)

OR

Figure-2 shows the assembly of a Bushed Bearing. Disassemble the parts correctly and then draw to scale 1: 1 the following views of the following components. Keep the same position of both, Body and Bush, with respect to H.P. and V.P.

1. Body :
1. Front view left half in section. (8)
2. Top view. (7)
2. Bush :
1. Full sectional front view. (4)
2. Top view. (3)

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

## Last Year Question Paper Class 12 Engineering Graphics 2018

Download class 12 Engineering Graphics question paper with the solution from best CBSE App the myCBSEguide. CBSE class 12 Engineering Graphics question paper 2018 in PDF format with the solution will help you to understand the latest question paper pattern and marking scheme of the CBSE board examination. You will get to know the difficulty level of the question paper.

## Previous Year Question Paper for class 12 in PDF

CBSE question papers 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005 and so on for all the subjects are available under this download link. Practicing real question paper certainly helps students to get confidence and improve performance in weak areas.

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