Previous year question paper for AE (Diploma Mechanical Engineering 5th)

1. Introduction (04 hrs)

1.1 Components of an automobile

1.2 Classification of automobiles

1.3 Layout of chassis

1.4 Types of drives-front wheel, rear wheel, four wheel, left hand, right hand

2. Transmission System (20 hrs)

2.1 Clutch Function, Constructional details of single plate and multiplate friction

clutches, Centrifugal and semi centrifugal clutch.

2.2 Gear Box:Function, Working of slide mesh, constant mesh and

synchromesh gear box, Torque converter and overdrive

2.3 Propeller shaft and rear axleFunction, Universal joint, Differential, Rear axle

drives and differenttypes of rear axles

2.4 Wheels and Tyres

Types of wheels- disc wheels and wire wheel, Types of tyres usedin Indian

vehicles, Causes of tyre wear, Toe in, Toe out, Camber,Caster, Kingpin

inclination, Tube less tyres

3.Steering System (06 hrs)

3.1 Function and principle

3.2 Ackerman and Davis steering gears

3.3 Types of steering gears- worm and nut, worm and wheel, worm and

roller, Rack and pinion type

4. Braking System (06 hrs)

4.1 Constructional detail and working of mechanical, hydraulic and

vacuum brake.

4.2 Details of master cylinder, wheel cylinder.

4.3 Concept of brake drum, brake lining and brake adjustment.

4.4 Bleeding of brakes

5. Suspension System (04 hrs)

5.1 Function

5.2 Types

5.3 Working of coil spring, leaf spring

5.4 Shock absorber

6. Battery (04 hrs)

6.1 Constructional details of lead and cell battery.

6.2 Specific gravity of electrolyte

6.3 Effect of temperatures, charging and discharging on specific gravity.

6.4 Capacity and efficiency of battery

6.5 Battery charging

6.6 Maintenance of batteries

6.7 Checking of batteries for Voltage and specific gravity

7. Dynamo and Alternator (04 hrs)

7.1 Dynamo, Function and details, Regulators-voltage, current and compensated

type, Cutout-Construction, working and their adjustment.

7.2 Alternator, Construction and working, Charging of battery from alternator

8.    8.1 Diagram of a Typical Wiring System of a Vehicle. (04 hrs)

8.2 Introduction to MPFI System.

9. Lighting System and Accessories (04 hrs)

9.1 Lighting system

9.2 Wiring circuit

9.3 Headlight, aiming of headlights

9.4 Lighting switches

9.5 Direction Indicators

9.6 Windscreen Wiper

9.7 Horn

9.8 Speedometer

9.9 Heater

9.10 Air-conditioning system

9.11 Heavy duty vehicles (Tractors, Bulldozer, Forklift)