Diploma Thermal and Automobile engineering important questions – 2/3 marks | Thermal and automobile engineering important questions

Diploma thermal and automobile engineering important questions

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Thermal & Automobile Engineering

Department : Mechanical Engineering                    Scheme : M

2/3 Marks questions asked in Board Examinations

Note : 1. Highlighted Questions are asked two or more than two times

  1. Questions collected from October 2017 – October 2019 from board        exam question paper

Unit – 1: Thermal power plant, steam Turbines and condenser, Refrigeration & Air  Conditioning

  1. State two merits & demerits of thermal power plant
  2. Define condenser
  3. State the necessity for compounding and types of compounding of steam turbines.
  4. State the advantages of fluidized bed combustion.
  5. Draw the P-V diagram and T.S. diagram of a modified rankine cycle and indicate the various process involved in the cycle.
  6. State the function of electrostatic precipitator
  7. Define vacuum efficiency of a condenser.
  8. State the difference between impulse turbine & reaction turbine.
  9. State the sources of air present in condenser.
  10. What are the elements of a condensing plant.
  11. Define C.O.P
  12. What is the function of a cyclone separator.
  13. State the difference between vapour compression and vapour absorption system of refrigeration.
  14. Write the uses of cyclone separator
  15. Define COP of a refrigerator.
  16. Classify the types of condenser

Unit – 2  I.C. Engines and its components

  1. State the functions of piston rings
  2. What is the function of cam shaft?
  3. State the function of a flywheel.
  4. Compare wet liners with dry liners
  5. Define specific fuel consumption.
  6. Sketch the valve of an I.C. Engine and name its features.
  7. In a diesel engine, the s.f.c was obtained as 260 gm/kwhr. The calorific value of the fuel is 42,000 kj/kg. determine brake thermal efficiency.
  8. What is the purpose of using cylinder liners?
  9. How are the engines classified based on valves?
  10. Difference between petrol engine and diesel engine.
  11. Mention the material used for cylinder block and connecting rod.

Unit – 3, Automobile Cooling Systems, Lubrication Systems & Fuel
Feed System

  1. State the purpose of lubrication system.
  2. Sketch the thermo syphon system & name the parts.
  3. Define carburetion.
  4. What are the drawbacks of petrol injection system?
  5. Explain the service rating of lubricating oils.
  6. Give a detailed classification of carburetors.
  7. What are the types of oil pumps
  8. List the type of lubrication systems.
  9. What are the elements of the fuel feed system in a petrol engine?
  10. State the two troubles that occur in lubrication system.
  11. What is petrol lubrication system?
  12. State the main parts of a simple carburetor.
  13. Define cooling systems (in engines)
  14. What is the function of fuel filter & air cleaner.

Unit – 4 , Automobile transmission, Power trains & Chassis

  1. Name the components of clutch.
  2. Write down the types of gear boxes.
  3. What are the factors of wheel alignment?
  4. Explain the working of air suspension system.
  5. Make a list of the common clutch troubles.
  6. What is the use of collapsible steering system?
  7. State the merits of front independent suspension system.
  8. State any two purposes of gear box.
  9. State three troubles in clutches and their remedies.
  10. What are the types of stub axle
  11. What is the purpose of slip joint?

Unit-5, AUTOMOBILE BRAKE SYSTEM, ELECTRICAL EQUIPMENT AND POLLUTION CONTROL

  1. State any two troubles in ignition system and remedies for them
  2. List the important components of lighting system.
  3. Mention the causes of spongy brake.
  4. Enumerate the different tests ascertaining the condition of a battery.
  5. Explain the self energizing action of brake shoes.
  6. Explain the PCV system with a neat sketch
  7. Mention the types of starting motor devices
  8. List the major parts of a battery coil ignition system
  9. State the factors of wheel alignment
  10. Name the tests carried out in a battery
  11. State two troubles in ignition system and their causes.

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