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Mechanical Engineering

LABORATORY Mechanical Engineering

The Department of Mechanical Engineering is well equipped with state of art labs to train students to advance their theoretical knowledge and sound practices of the profession. The laboratories in Mechanical Engineering Department are well equipped according to the norms of Punjab State Board of Technical Education & Industrial training Chandigarh, All India Council of Technical Education (AICTE)

Third Semester
ENGINEERING MATERIALS

Sr. No.	LIST OF PRACTICALS
1	Classification of about 25 specimens of materials/machine parts into: (i) Metals and non metals (ii) Metals and alloys (iii) Ferrous and non ferrous metals (iv) Ferrous and non ferrous alloys
2	Given a set of specimen of metals and alloys (copper, brass, aluminium, cast iron, HSS, Gun metal); identify and indicate the various properties possessed by them.
3	a) Study of heat treatment furnace. b) Study of a thermocouple/pyrometer.
4	Study of a metallurgical microscope and a specimen polishing machine.
5	To prepare specimens of following materials for microscopic examination and to Examine the microstructure of the specimens of following materials: i) Brass ii)Copper iii)Grey iv)Malleable v)Low carbon steel vi)High carbon steel vii) HSS
6	To anneal a given specimen and find out difference in hardness as a result of annealing.
7	To normalize a given specimen and to find out the difference in hardness as a result of normalizing.
8	To harden and temper a specimen and to find out the difference in hardness due to tempering.

Applied Mechanics

Sr. No.	LIST OF PRACTICAL
1	Verification of the polygon law of forces using gravesend apparatus.
2	To verify the forces in different members of jib crane.
3	To verify the reaction at the supports of a simply supported beam
4	To find the mechanical advantage, velocity ratio and efficiency in case of an inclined plane.
5	To find the mechanical advantage, velocity ratio and efficiency of a screw jack.
6	To find the mechanical advantage, velocity ratio and efficiency of worm and worm wheel.
7	To find mechanical advantage, velocity ratio and efficiency of single purchase crab.
8	To find out center of gravity of regular lamina.
9	To find out center of gravity of irregular lamina.
10	To determine coefficient of friction between three pairs of given surface.

ELEMENTS OF ELECTRICAL AND
ELECTRONICS ENGINEERING

Sr. No.	LIST OF PRACTICALS
1	Connection of a three-phase motor and starter with fuses and reversing of direction of rotation.
2	Connection of a single-phase induction motor with supply and reversing of its direction of rotation.
3	Troubleshooting in domestic wiring system, including distribution board.
4	Connection and reading of an electric energy meter.
5	Use of ammeter, voltmeter, wattmeter, and multi-meter.
6	Measurement of power and power factor in a given single phase ac circuit.
7	Study of different types of fuses, MCBs and ELCBs.
8	Study of zener diode as a constant voltage source and to draw its V-I characteristics.
9	Study of earthling practices.
10	To draw V-I characteristics of a (i) NPN transistor (ii) thyristor (SCR).
11	Study of construction and working of a (i) stepper motor and (ii) servo motor.

METROLOGY AND INSTRUMENTATION

Sr. No.	LIST OF PRACTICALS
1	Internal and external measurements with vernier calliper and microscope.
2	Measurement of linear dimensions with height gauge and depth gauge.
3	Measurement of flatness, concentricity with dial indicator.
4	Use of feeler gauge, wire gauge, radius gauge and fillet gauges for checking of standard parameters.
5	Use of plain plug and ring gauge, taper plug and ring gauge, thread plug and ring gauge and snap gauges.
6	Measurement of Angle Using: i) Cylindrical rollers and spherical balls and slip gauges. ii) Bevel Protector iii) Sine Bar/Sine Table, Slip Guages, Height Gauge and dial indicator. iv) Angle deckor.
7	Measurement of spur gear characteristics: i) Measurement over teeth (M.O.T) by using flange / Disc micrometer. ii) P.C.D run-out using bench centre, mandrel, cylindrical pin and dial indicator. iii) Composite error using Gear Roller Tester and Master Gear.
8	Measurement of thread parameters by using tool maker’s microscope.
9	Measurement of effective diameter of external threads by 2-wire and 3-wire method.
10	Measurement of cylindrical bore using cylinder bore gauge for bore diameter, ovality and taper.
11	Measurement of worn out IC engine piston clearance between cylinder and piston.
12	Measurement of surface roughness using surface roughness tester.
13	Measurement of co-ordinates of two or more than two holes using surface plate, angle plate, Height Gauge, dial indicator and slip gauges.
14	Measurement of a profile using profile projector.
15	Study and use of Auto-Collimator.

FOURTH SEMESTER
HYDRAULICS & PNEUMATICS

Sr. No.	LIST OF PRACTICALS
1	Measurement of pressure head by employing: i) Piezometer tube ii) Single and double column manometer.
2	To Find out the value of coefficient of discharge for a venturimeter.
3	Measurement of flow by using venturimeter.
4	Verification of Bernoulli’s theorem.
5	To find coefficient of friction for a pipe (Darcy’s friction).
6	To study hydraulic circuit of an automobile brake and hydraulic ram.
7	Study the working of a Pelton wheel and Francis turbine.
8	To study a single stage centrifugal pump for constructional details and its operation to find out its normal head and discharge.

STRENGTH OF MATERIALS

Sr. No.	LIST OF PRACTICALS
1	Tensile test on bars of Mild steel and Aluminum.
2	Bending tests on a steel bar or a wooden beam.
3	Impact test on metals. a) Izod test. b) Charpy test.
4	Torsion test of solid specimen of circular section of different metals for determining modulus of rigidity.
5	To determine the stiffness of a helical spring and to plot a graph between load extension.
6	Hardness test on different metals.
7	Note : All the tests need to be done as per prescribed Indian standards.

THERMODYNAMICS - I

Sr. No.	LIST OF PRACTICALS
1	Determination of temperature by:- a) Thermocouple. b) Pyrometer. c) Infrared thermometer.
2	Demonstrate of mountings and accessories on a boiler.
3	Study of boilers (through industrial visit).
4	Demonstrate the working of air compressor.
5	Demonstration of heat transfer through conduction, convection and Radiation.
6	Study of working of high pressure boiler.
7	Study the working of Lancashire boiler and Nestler boiler.

FIFTH SEMESTER
REFRIGERATION AND AIR CONDITIONING

Sr. No.	LIST OF PRACTICALS
1	Identify various tools of refrigeration kit.
2	Practice in cutting, bending, flaring, swaging and brazing of tubes.
3	Study of thermostatic switch, LP/HP cut out overload protector filters, strainers and filter driers.
4	Identify various parts of a refrigerator and window air conditioner.
5	To find COP of Refrigeration system.
6	To measure air flow using anemometer.
7	Charging of a refrigerator / air conditioner.
8	To defect faults in a refrigerator / air conditioner.
9	Visit to an ice plant or cold storage plant or central air conditioning paint.

THERMODYNAMICS - II

Sr. No.	LIST OF PRACTICALS
1	Dismantle an IC engine and note down the condition of various parts, removal and fitting of piston, rings, measuring of bore size, crank shaft ovality and assemble it.
2	Dismantle a carburetor.
3	Servicing of petrol injection system.
4	Valve servicing, grinding, lapping and fitting mechanism and tappet adjustment.
5	Inspection of ignition system of a multi-cylinder engine stressing ignition timings, setting, fixing order and contact breaker; gap adjustment, spark plug cleaning.
6	Service of cooling and lubrication system of IC engine and note down the functioning/testing of various components.
7	Morse test on multi-cylinder petrol engine.
8	Determination of BHP by dynamometer.
9	Local visit to roadways or private automobile workshop.
10	Draw layout of modem automobile workshop and note down the special tools and equipments in each shop.

COMPUTER AIDED DRAFTING AND MODELING

Sr. No.	LIST OF PRACTICALS
1	Introduction to AutoCAD commands.
2	Detail and assembly drawing using AUTOCAD.
3	Isometric Drawing by CAD using Auto CAD.
4	Introduction to Solid works : (i) Introduction to Sketcher: Sketch Entities, Sketch Tools, Blocks, Dimensioning (ii) Assembly

SIXTH SEMESTER
AUTOMOBILE ENGINEERING

Sr. No.	LIST OF PRACTICALS
1	Fault and their remedies in Battery Ignition system.
2	Adjustment of Head Light Beam (ii) Wiper and Indicators
3	Dismantling and inspection of : (i) AC Pump (ii) SU Pump
4	Dismantle : (i) rear axle (ii) differential and find out the gear ratio of crown wheel & driven sun gear and planet pinion.
5	Fault finding practices on an automobile – four wheelers (petrol/ diesel vehicles).
6	Servicing/Tuning of a 2 wheeler/4 wheeler.
7	Servicing of hydraulic brakes : a) adjustment of brakes b) bleeding of brakes c) fitting of leather pads
8	Tuning of an automobile engine.
9	Testing and Charging of an automobile battery and measuring cell voltage and specific gravity of electrolyte.
10	Changing of wheels and inflation of tyres, balancing of wheels.
11	Measuring spark gap, valve clearance and ring clearance; carrying out cleaning operations for adjustment

CNC MACHINES AND AUTOMATION

Sr. No.	LIST OF PRACTICALS
1	Study the constructional details of CNC lathe.
2	Study the constructional details of CNC milling machine.
3	Study the constructional details and working of:– Automatic tool changer and tool setter – Multiple pallets – Swarf removal – Safety devices
4	Develop a part programme for following lathe operations and make the job on CNC lathe and CNC turning center : – Plain turning and facing operations – Taper turning operations – Operation along contour using circular interpolation
5	Develop a part programme for the following milling operations and make the job on CNC milling : – Plain milling – Slot milling – Contouring – Pocket milling
6	Preparation of work instruction for machine operator.
7	Preparation of preventive maintenance schedule for CNC machine.
8	Demonstration through industrial visit for awareness of actual working of FMS in production.
9	Use of software for turning operations on CNC turning center.
10	Use of software for milling operations on machine centres.

List of Major Equipment

Research and Development Centre for Bicycle and Sewing Machine (Polytechnic College wing) came into existence in year 2001. The Polytechnic College is a Technical Education Wing of Research and Development for Bicycle and Sewing Machine Ludhiana. The R&D Centre was established in 1983 by Punjab Government with the assistance of UNDP/UNIDO.