Previous year question paper for MV (Diploma Automobile Engineering 5th)

1. Simple Mechanism (8 hrs)

- Definition of link, kinematic pair, kinematic chain, Mechanism, inversions

and machines.

- Simple examples of mechanism with:-

- Lower pairs, Four bar chain, Slider crank chain, Double slider crank chain,

Higher pairs

2. Motion and Turning Moment (10 hrs)

- Displacement, velocity and acceleration of piston.

- Angular velocity and angular acceleration of connecting rod.

- Calculations of piston effort and crank effort at different angles.

- Fly wheel - its types, weight and moment of inertia.

- Fluctuation of energy for fly wheel.

- Turning moment diagrams with reference to internal combustion engines.

- Analysis of Hooke’s Joint.

3. Power Transmission (08 hrs)

- Flat belt, V-belt and chain drives.

- Ratio of tension of two sides of the belt with and without centrifugal

tension.

- Horse power transmitted and condition for maximum horse power

transmitted.

- Velocity ratios transmitted by Belts

- Simple, compound and epicyclic gear box.

4. Vehicle in Motion (8 hrs)

- Air, gradient, and rolling resistances.

- Tractive effort, traction, Inertia load, Draw bar pull and power required to

propelled a vehicle.

- Calculations of acceleration and tractive effort required in case of front

wheel drive, rear wheel drive and four wheel drive.

- Centrifugal force and its effect on vehicle stability on banked and

unbanked road.

5. Vehicle Control (06 hrs)

- Braking friction and limits of braking.

- Retardation and Braking force, calculations in case of front wheel, rear

wheel and all wheel braking.

- Weight transfer during braking.

- Stopping distance and stopping time.

- Ackermann Steering Mechanism, Correct Steering angle.

-

6. Balancing (8 hrs)

- Concepts of static and dynamic balancing, working of static and dynamic

machine.

- Balancing of rotating masses-single rotating mass by a single mass

rotating in the same plane and by two masses rotating in different planes,

balancing of several masses rotating in the same plane. Balancing of

several masses rotating in different planes.

7. Vibration (08 hrs)

- Introduction, Types of vibrating motion, Types of free vibrations, Natural

Frequency of Free longitudinal Vibrations, Natural frequency of free,

Transverse vibrations.

- Causes of vibration in rotating bodies, damping of vibrations, Free damped

vibrations (Vacuum Damping)