ME-802-A Automobile Engineering - May 2023 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
   aWhat do you mean by Driver's visibility in automobiles vehicles? State its role in accidental management. Discuss methods for driver's visibility improvement.
   How to answer

   • Define driver's visibility (direct/indirect vision, blind spots)
   • Role in accident prevention and accidental management
   • Factors affecting visibility
   • Methods for improvement - mirrors, lighting, wipers, design, ADAS
2. 7 Marks
   bDefine vehicle aerodynamics with layout. Discuss various possible locations of engine in a vehicle while design.
   How to answer

   • Define vehicle aerodynamics and layout
   • Drag, lift, flow concepts
   • Possible engine locations: front, rear, mid, transverse/longitudinal
   • Merits/demerits of each location
3. 7 Marks
   aDefine center point steering. Explain over steer and under steer with suitable sketches.
   How to answer

   • Define centre point steering
   • Define oversteer and understeer
   • Sketches showing turning behaviour
   • Causes and effects on stability
4. 7 Marks
   bDraw and explain front wheel geometry. What is power steering?
   How to answer

   • Draw front wheel geometry showing camber, caster, toe, king-pin inclination
   • Explain each angle purpose
   • Define power steering
   • Types/need of power steering
5. 7 Marks
   aDiscuss the working principle of torque converters used in automobiles.
   How to answer

   • Components: pump impeller, turbine, stator
   • Fluid coupling principle with torque multiplication
   • Working phases: stall, acceleration, coupling
   • Neat sketch of torque converter
6. 7 Marks
   bExplain types of gear boxes with neat sketches.
   How to answer

   • Types: sliding mesh, constant mesh, synchromesh, epicyclic/automatic
   • Construction and working of each
   • Neat sketches of gear boxes
   • Comparison of applications
7. 7 Marks
   aDiscuss different types of wheels and tyres used commercially in India.
   How to answer

   • Wheel types: pressed steel, alloy, wire, split
   • Tyre types: tube, tubeless, radial, cross-ply
   • Commercial use in India
   • Applications and characteristics
8. 7 Marks
   bDefine 'Shock absorber' used in suspension system. Discuss its types.
   How to answer

   • Define shock absorber function in suspension
   • Working principle - damping vibrations
   • Types: hydraulic, telescopic, gas-filled
   • Applications
9. 7 Marks
   aDiscuss principle of operation of starting mechanism in a vehicle.
   How to answer

   • Purpose of starting mechanism
   • Components: battery, starter motor, solenoid, Bendix drive
   • Working sequence
   • Circuit/layout explanation
10. 7 Marks
    bDraw circuits for wiper mechanism and lighting system used in an automobile.
    How to answer

    • Wiper mechanism circuit components and operation
    • Lighting system circuit - head, tail, indicators
    • Neat circuit diagrams
    • Switches, fuses and wiring explanation
11. 7 Marks
    aList Indian standards for automotive vehicles. Discuss Euro-I to Euro-VI norms.
    How to answer

    • List Indian standards - AIS, BIS, Bharat Stage norms
    • Evolution Euro-I to Euro-VI / BS-I to BS-VI
    • Emission limits for CO, HC, NOx, PM
    • Significance for vehicles
12. 7 Marks
    bExplain the working of a catalytic converters. State its advantages.
    How to answer

    • Construction of catalytic converter
    • Oxidation and reduction reactions
    • Working to convert CO, HC, NOx
    • Advantages - emission control, efficiency
13. 7 Marks
    aWhat are different fuel additives? Discuss with their effects on engine performance.
    How to answer

    • Types of fuel additives - octane/cetane improvers, detergents, antioxidants
    • Functions of each additive
    • Effects on combustion, knock, deposits
    • Impact on engine performance and emissions
14. 7 Marks
    bDiscuss environmental management systems for automotive vehicles.
    How to answer

    • Need for environmental management in automobiles
    • Systems: emission control, waste management, ELV
    • Standards ISO 14001, Bharat Stage
    • Measures by manufacturers
15. 14 Marks
    Write short note on the following (any two):

    1. a)Optimization of vehicle body shape
    2. b)Toe-in and toe-out
    3. c)Clutch lining and bonding
    4. d)Material properties of tyres and tubes
    5. e)Testing of battery
    How to answer

    • Select any two topics from list
    • Give definition and key points for each
    • Add neat sketch/diagram where relevant
    • Mention applications/advantages