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SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)

DEPARTMENT of MECHANICAL ENGINEERING QUESTION BANK MACHINE DRAWING (18MEC215)

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II B.Tech I Semester L T P C

1 - 4 3

18MEC215 MACHINE DRAWING

Pre-requisites: Course on engineering graphics.

Course Educational Objectives:

CEO1: To impart knowledge on I.S. conventions, methods of dimensioning, sections, conventional

representation of materials and machine elements

CEO2: To develop the analysing skills to draw the machine elements including screw threads, bolts, nuts, keys,

cotter joints, knuckle joint and riveted joints

CEO3: To develop the analysing skills to draw the mechanical parts such as shaft coupling, spigot and socket

joint - journal and foot step bearings

CEO4: To demonstrate and draw the assemblies of engine parts, such as stuffing box, cross heads, eccentrics,

connecting rod and piston, and their sectional views

CEO5: To demonstrate and draw the assemblies of machine parts, such as screw jack, plummer block, pipe vice

and tailstock, and their sectional views

UNIT – 1: MACHINE DRAWING CONVENTIONS

Need for drawing conventions - Introduction to IS conventions - Methods of dimensioning

- General rules for sizes and placement of dimensions for holes, centers, curved and

tapered features - Conventional representation of materials - Common machine elements

and parts such as screws, nuts, bolts, keys, gears, webs, ribs - Conventional representation

of limits, fits and tolerances - Types of sections - Selection of section planes and drawing

of sections and auxiliary sectional views - Title boxes - Size - Location and details -

Common abbreviations and their liberal usage - Types of drawings - Working drawings for

machine parts.

UNIT – 2: DRAWING OF MACHINE ELEMENTS

Selection of views - Additional views for the following machine elements and parts with

every drawing proportion - Popular forms of screw threads, bolts, nuts, stud bolts, tap

bolts, set screws -Keys, cotter joint and knuckle joint - Riveted joints for plates.

UNIT – 3: DRAWING OF SIMPLE MECHANICAL PARTS

Selection of views - Additional views for the following machine elements and parts with

every drawing proportion - Shaft coupling, spigot and socket joint - Journal and foot step

bearings.

UNIT – 4: ASSEMBLY DRAWINGS OF ENGINE PARTS

Assembly drawing of stuffing box, crosses head of steam engine, eccentrics, piston and

connecting rod.

UNIT – 5: ASSEMBLY DRAWINGS OF MACHINE PARTS

Assembly drawing of screw jack, plummer block, pipe vice and tailstock.



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Course Outcomes:

On successful completion of the course, students will be able to:

Course Outcomes POs related to

COs

CO1 Analyze the machine drawing conventions which includes dimensioning, sections,

conventional representation of materials and common machine elements. P01,PO2

CO2 Illustrate the machine elements including screw threads, bolts, nuts, keys, cotter joints,

knuckle joint and riveted joints. P01,PO2,PO3

CO3 Illustrate the simple mechanical parts such as shaft coupling, spigot and socket joint -

journal and foot step bearings P01,PO2,PO3

CO4 Construct an assembly drawing of engine parts such as stuffing box, cross heads,

eccentrics, connecting rod and piston. P01,P02

CO5 Construct an assembly drawing of machine parts such as screw jack, plummer block,

pipe vice and tailstock.

P01,P02

Text Books:

1. Machine Drawing, P.S.Gill, n/e, 2012, S.K Kataria and Sons, New Delhi.

2. Machine Drawing, K.L.Narayana, P.Kannaiah and K.Venkata Reddy, 4/e, 2012,

New Age International (P) Ltd. Publishers, New Delhi.

Reference Books:

1. A Text Book of Machine Drawing in First Angle, R.K.Dhawan, 1/e, 2009, S.

Chand & Company Pvt.Ltd. New Delhi.

2. Machine Drawing, Goel, n/e, 2012, S.K.Kataria and Sons, New Delhi.

3. Machine Drawing, N.D.Butt and V.M.Panchal, 48/e, 2013, Charotar Publishing

House Pvt. Ltd.

4. Machine Drawing (With Auto CAD), Ajit Singh, 2/e, 2012, Tata McGraw-Hill

Education Pvt. Ltd., Noida.

5. Fundamentals of machine Drawing, P.L.Sah and Sadhu Singh, 2/e, 2012, Prentice-

Hall of India, Pvt. Ltd., New Delhi.

Note:

The end exam will be for 4 hrs in the following format.

All answers should be on the drawing sheet only

Question 1 set on unit I of the syllabus 2 out of 3 to be answered with a

weightage of 4 marks each – 08 marks.

Question 2 set on unit II or III of the syllabus 2 out of 3 to be answered with a

weightage of 10 marks each – 20 marks.

Question 3 set on unit IV or V of the syllabus with a weightage of 42 marks.



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QUESTION BANK

Question

No. Questions

PO

Attainment

UNIT – 1: MACHINE DRAWING CONVENTIONS

PART-A ( Four Marks Questions)

1 Sketch the conventional representation of the following materials:

(a) Metals (b) Glass PO1

2

Sketch the conventional representation of the following materials:

(a) Packing (b) Insulating material

PO1

3 Sketch the conventional representation of the following materials:

(a) Liquids (b) Wood (c) Concrete PO1

4 Sketch the conventional representation of the following:

(a) Cylindrical compression spring (b) Cylindrical tension spring PO1

5 Sketch the conventional representation of the following:

(a) Splined shafts (b) leaf spring with eyes PO1

6 Sketch the conventional representation of the following: (a) Spur gear (b) Helical gear

PO1

7 Sketch the conventional representation of the following: (a) Bearings (b) Interrupted views

PO1

8 Sketch the conventional representation of the following: (a) worm wheel (b) worm

PO1

9 Sketch the conventional representation of the following: (a) Bevel gear (b) square on the shaft

PO1

10

The drawing in Fig.1 is not dimensioned properly. Correct them according to standards.

Fig.1

PO1



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Question

No. Questions

PO

Attainment

UNIT – 2: DRAWING OF MACHINE ELEMENTS

PART-B (Ten Marks Questions)

1 Sketch the following thread profiles for a pitch 30 mm and give their applications:

(a) Sharp V thread (b) Buttress thread (c) Square thread

PO1

2 Sketch the following thread profiles for a pitch 30 mm and give their applications:

(a) Worm thread (b) whitworth thread (c) ACME thread PO1

3 Give the proportions of a hexagonal nut, in terms of the nominal diameter of the bolt of 20 mm.

PO1

4 Draw the three views of a hexagonal headed bolt of nominal diameter 25 mm and length 100 mm, with a hexagonal nut and washer.

PO1

5 Draw the sectional view from the front, and view from the side of a cotter joint with sleeve

used to connect two rods of 30 mm diameter each. PO1

6 Draw the half sectional view from the front, with top half in section and the view from the side of a cotter joint with socket and spigot ends, to connect two rods of 30 mm diameter each.

PO1

7 Two square rods of side 50 mm each, are connected by a cotter joint with a gib. sketch the

following views of the assembly:

a) half sectional view from the front and b) view from the side

PO1

8 Draw the half sectional view from the front, with top view knuckle joint, to connect two rods

of 30 mm diameter each. PO1

9 Giving proportionate dimensions, sketch any four forms of commonly used rivet heads, choosing the rivet diameter as 10 mm.

PO1

10 Draw (a) sectional view from the front and (b) view from above, of the single riveted lap joint

to join plates of thickness 10 mm. PO1

11 Draw (a) sectional view from the front and (b) view from above, of the double riveted chain

lap joint to join plates of thickness 10 mm. PO1

12 Draw (a) sectional view from the front and (b) view from above, of the double riveted zig-zag

lap joint to join plates of thickness 10 mm. PO1

13 Draw (a) sectional view from the front and (b) view from above, of the single riveted, single

strap butt joint to join plates of thickness 10 mm. PO1

14 Draw (a) sectional view from the front and (b) view from above, of the single riveted, double

strap butt joint to join plates of thickness 10 mm. PO1

15 Draw (a) sectional view from the front and (b) view from above, of the double riveted, double

strap, chain butt joint to join plates of thickness 10 mm. PO1

16 Draw (a) sectional view from the front and (b) view from above, of double riveted, double

strap, zig-zag butt joint to join plates of thickness 10 mm. PO1



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Question

No. Questions

PO

Attainment

UNIT – 3: DRAWING OF SIMPLE MECHANICAL PARTS

PART-B (Ten Marks Questions)

1 Sketch the sectional view from the front and view from the side of a butt-muff coupling; indicating proportions for connecting two shafts, each of diameter 30 mm.

PO1

2 Sketch the required views, indicating the proportions of a solid flange coupling used in marine

engines to connect two shafts, each of diameter 60 mm. PO1

3 Draw (a) half sectional view from the front, top half in section and (b) half sectional view

from the side, left half in section, of a split-muff coupling, indicating proportions to connect

two shafts, each of diameter 50 mm.

PO1

4 Draw (a) half sectional view from the front, top half in section and (b) view from the side of a

rigid flange coupling to connect two shafts, each of diameter 30 mm. Sketch the above views

for the protected type of flange coupling.

PO1

5 Draw (a) half sectional view from the front, top half in section and (b) view from the side of a

bushed pin type flange coupling, indicating proportions to connect two shafts, each of

diameter 30 mm.

PO1

6 Sketch the required views, indicating proportions of compression-muff coupling, to connect

two shafts, each of diameter 30 mm. PO1

7 Sketch the required views, indicating proportions of cone coupling, to connect two shafts,

each of diameter 30 mm. PO1

8 Sketch the required views, indicating proportions of claw coupling, to connect two shafts,

each of diameter 30 mm. PO1

9 Draw (a) sectional view from the front and (b) view from the side of a universal coupling,

indicating proportions, to connect two shafts, each of diameter 40 mm. PO1

10 Sketch the required views of Oldham coupling, indicating proportions, used to connect two

shafts, each of diameter 30 mm. PO1

11 Sketch the required views of cushion coupling, indicating proportions, used to connect two

shafts, each of diameter 30 mm. PO1

17 Sketch the necessary views of a foot-step bearing, for supporting a shaft of diameter 50 mm.

give all important proportionate dimensions. PO1



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UNIT – 4: ASSEMBLY DRAWINGS OF ENGINE PARTS PART-C ( 42 Marks Questions)

1) Assemble all parts of the stuffing box for a vertical steam engine, shown in Fig. 1 and draw,

(i) half sectional view from the front, with left half in section,

(ii) half sectional view from the right and

(iii) view from above.

Fig.1. stuffing box

Fig.1. stuffing box



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2. Figure 2 shows the details of steam engine crosshead. Assemble the parts and draw,

(i) half sectional view from the front, with bottom half in section and

(ii) view from above.

Fig. 2.steam engine crosshead



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3. The details of a crosshead of a steam engine are shown in Fig. 3. Assemble the parts and draw,

(i) half sectional view from the front, showing top half in section and

(ii) the view from the left.

Fig.3.Cross head



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4) The details of an eccentric are shown in Fig. 4. Assemble the parts and draw,

(i) half sectional view from the front, with top half in section,

(ii) view from the right and


Fig.4. Eccentric



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5. Assemble the parts of the piston, shown in Fig. 5 and draw the following views:

(i) Sectional view from the front,

(ii) Half sectional view from the left, and

(iii) Sectional view from above.

Fig. 5. Piston of a petrol engine



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6) Figure 6 shows the details of petrol engine connecting rod. Assemble all the parts and draw,

(i) full sectional view from the front, and

(ii) view from above

Fig. 6. Connecting rod



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UNIT – 5: ASSEMBLY DRAWINGS OF MACHINE PARTS

PART-C ( 42Marks Questions)

7) Assemble all parts of the screw jack, shown in Fig. 7 and draw the following views:

(i) Half sectional view from the front, and

(ii) View from above.

Fig. 7. Screw jack



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8) Assemble the parts of the plummer block, shown in Fig. 8 and draw the following views:

(i) Half sectional view from the front, with left half in section, and

(ii) View from above.

Fig. 8. Plummer block



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9) The details of a pipe vice are shown in Fig. 9. Assemble the parts and draw,

(i) view from the front,

(ii) sectional view from the left and


Fig. 8. Pipe vice



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10) Figure 10 shows the details of a lathe tail-stock. Assemble the parts and draw to a suitable scale,

(i) sectional view from the front and

(ii) view from the left.

Fig. 10. Lathe tail stock

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