ME-802-A Automobile Engineering - May 2022 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aExplain the different chassis layout with respect to the engine location, steering position and drive on the wheels.
   How to answer

   • Define chassis layout classification criteria
   • Explain layouts by engine location - front, rear, transverse
   • Explain steering position - left/right hand drive
   • Explain drive on wheels - FWD, RWD, 4WD with layout diagram
2. 7 Marks
   bExplain different type of loads acting on the vehicle frame during head on collision.
   How to answer

   • Define vehicle frame loads
   • Explain frontal impact / head-on collision forces
   • Discuss bending, torsion, impact and crush loads
   • Effect on frame design and safety
3. 7 Marks
   aHow is a frame different from a chassis? Discuss the design aspects and salient features of frame.
   How to answer

   • Define frame vs chassis
   • List design aspects - strength, stiffness, weight
   • Explain salient features - ladder, tubular, monocoque
   • Comparison summary
4. 7 Marks
   bWrite a short note on different type of steering gear boxes.
   How to answer

   • Define steering gear box function
   • List types - worm and sector, rack and pinion, recirculating ball
   • Brief working of each type
   • Applications
5. 7 Marks
   aExplain the advantages and disadvantages of front wheel, rear wheel and four wheel drive.
   How to answer

   • Define FWD, RWD, 4WD layouts
   • Advantages of each - traction, cost, space
   • Disadvantages - skidding, complexity, mileage
   • Comparative suitability
6. 7 Marks
   bExplain the terms camber, Kingpin inclination, castor, toe-in and toe-out with neat sketch.
   How to answer

   • Define camber, kingpin inclination, castor, toe-in/toe-out
   • Explain effect on steering stability and tyre wear
   • Neat sketches for each angle
   • Typical values
7. 7 Marks
   aWrite note on starting mechanism of a vehicle.
   How to answer

   • Define starting mechanism / starter motor
   • Components - battery, solenoid, pinion, flywheel
   • Working steps of cranking
   • Types of drives
8. 7 Marks
   bHow is bleeding of hydraulic brake takes place? What is its purpose?
   How to answer

   • Define bleeding of hydraulic brake
   • Steps / procedure to remove air
   • Purpose - remove air lock, restore pressure
   • Precautions
9. 14 Marks
   Write short notes on any three.

   1. a)Location of engine in an automobile.
   2. b)Toe in and toe out conditions.
   3. c)Pneumatic power brake.
   4. d)Lighting system of a vehicle
   How to answer

   • Location of engine - front, rear, transverse
   • Toe-in / toe-out definition and effects
   • Pneumatic power brake principle and layout
   • Lighting system components and circuit
10. 7 Marks
    aExplain the principle of self-energisation in Braking System.
    How to answer

    • Define self-energisation / servo action
    • Principle with leading vs trailing shoe
    • Force diagram and friction assistance
    • Application in drum brakes
11. 7 Marks
    bDiscuss different types of springs used in transmission system.
    How to answer

    • Role of springs in transmission / suspension
    • Types - coil, leaf, torsion, diaphragm
    • Construction and characteristics
    • Application in clutch / gearbox
12. 7 Marks
    aExplain the Indian standards for automotive vehicles for Emission and pollution control in brief.
    How to answer

    • Need for emission standards
    • Indian Bharat Stage norms overview
    • Pollutants covered - CO, HC, NOx, PM
    • Pollution control measures
13. 7 Marks
    bDiscuss difference in Euro I to Euro VI norms.
    How to answer

    • Evolution Euro I to Euro VI
    • Progressively stricter limits table
    • Difference in diesel vs petrol limits
    • After-treatment technologies
14. 14 Marks
    Write the short note on the following (Any three)

    1. a)Catalytic converters
    2. b)Fuel additives
    3. c)Regulator electric fuel gauge
    4. d)Trouble Shooting probable causes
    How to answer

    • Catalytic converter - construction and reactions
    • Fuel additives - purpose and types
    • Electric fuel gauge - regulator working
    • Troubleshooting - probable causes and remedies