Previous year question paper for MP1 (Diploma Mechanical Engineering 3rd)

1. Turning (16hrs)

1.1 Principles of turning

1.2 Description and function of main parts of lathe

1.3 Specification of lathe

1.4 Drives and transmission

1.5 Work holding devices

1.6 Lathe tools

1.7 Lathe operations-Plain and step turning, facing, parting off, taper turning,

eccentric turning, drilling, reaming, boring, threading andknurling.

1.8 Cutting parameters-speed, feed and depth of cut

1.9 Speed ratio, preferred numbers of speed selection

1.10 Cutting fluid- its purpose and types

1.11 Lathe accessories(Steady rest, taper turning attachment, tool post grinder)

1.12 Types of lathes

1.12.1 Brief description of capstan and turret lathes.

1.12.2 High performance lathes 

2. Drilling (06 hrs)

2.1 Principle of drilling

2.2 Classification of drilling machines and their description

2.3 Operations performed on drilling machines- drilling, reaming,counter boring,

counter sinking, hole milling, tapping.

2.4 Speeds and feeds during drilling

2.5 Types of drills and their features

2.6 Drill holding devices.

3. Boring (06 hrs)

3.1 Principle of boring

3.2 Classification of boring machines and their description

3.3 Specification of boring machine

3.4 Boring tools

3.5 Boring bars and boring heads

3.6 Alignment of bores and its importance

4. Shaping, Planning and Slotting (08 hrs)

4.1 Working principle of shaper, planer and slotter

4.2 Quick return mechanism applied to them

4.3 Types of tools used and their geometry

4.4 Specifications of shaper, planer and slotting machine

4.5 Speeds and feeds in above processes.

5. Foundry Practices (12 hrs)

5.1 Pattern making

5.1.1 Types of patterns

5.1.2 Pattern material

5.1.3 Pattern allowances

5.1.4 Coloring of patterns 

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5.1.5 Introduction to cores

5.1.6 Core materials and types of cores.

5.2 Moulding

5.2.1 Introduction to moulding

5.2.2 Types of moulding sand and additives, their properties

5.2.3 Sand mixing and mould preparation

5.2.4 Casting defects - causes and their remedies

5.3 Melting and pouring

5.3.1 Types of melting furnaces used.

• Pit furnace

• Cupola

• Reverberatory

• Electric melting furnace

5.3.2 Closing and pouring of mould

5.4 Special casting methods

5.4.1 Introduction to die casting, investment, centrifugal casting