2023/03/29

4021410 - HEAT POWER ENGINEERING important question

 

UNIT: I STEAM GENERATORS AND STEAM BOILERS

PART: A (3Marks)

1       Define the term:(i)Enthalpy of evaporation (ii)Enthalpy of water

2       List out the types of steam.

3       Define i) Specific entropy ii) Specific volume of steam iii) Internal energy.

4       Define the term (i) Dryness fraction (ii) Wetness fraction.

5       What are the advantages of super heated steam?

6       State the location of an injector in a steam boiler.

7       Mention the various stages in the formation of steam.

8       What is steam boiler?

9       Define boiler efficiency.

10  Mention the essentials of good steam boiler.

11  List out the factors to considered in the selection of a steam boiler.

12  State the function of (i) Economizer (ii) Air pre-heater (iii) super heater in a boiler.

13  Difference between boiler mountings and boiler accessories.

14  State the various heat losses in a boiler and how to minimize them.

                      

                              PART: B (7Marks & 14 Marks)

1       Explain the working principle of BHEL high pressure boiler.

2       Describe the working of steam safety valve.

3       Distinguish between fire tube boiler and water tube boiler.

4       Write the location function and working of i) Economizer  ii) Air Preheater iii)blow off cock

5       Discuss in detail about  the boiler accessories (i)Injector (ii)steam separator

6       Write the location function and working of i) water level indicator ii) steam stop valve.iii)blow off cock

UNIT: II STEAM ENGINE, STEAM TURBINE, STEAM CONDENSER

 

PART: A [3Mark]

1       What is steam engine?

2       Name the important parts of a steam engine.

3       State the function of piston and connecting rod.

4       Define (i) Indicated power (ii) Brake power

5       What are the types of compounding?

6       State any three classification of steam engine.

7       Compare impulse turbine and reaction turbine.

8       What do you mean by bleeding in steam turbine?

9       State the types of surface condenser.

10  Define surface condenser.

11  Mention the elements of condensing plant.

12  What are the energy losses in steam turbine?

13  Define (i)Mean effective pressure (ii)Indicated power(iii)Brake power

14  Define (i) Mechanical efficiency (ii) Relative efficiency (iii) Overall efficiency.

15  Distinguish between jet and surface condenser.

 

                                                    PART: B [7&14 Marks]

1       Explain the working of reciprocating steam engine.

2       Sketch and explain the actual indicator diagram.

3       Describe the velocity compounding in a steam turbine with a neat sketch.

4       Discuss in detail about pressure compounding in a steam turbine with a neat sketch.

5       Briefly explain about pressure velocity compounding in a steam turbine

6       Describe any two types of jet condenser.

7       Explain any two types of surface condenser.

 

 

 

 

 

 

 

 

 

 

             UNIT: III AIR COMPRESSORS GAS TURBINES AND JET PROPULSION

 

                                                       PART: A [3Marks]

1       Define compressor.

2       What are the uses of compressed air?

3       Define volumetric efficiency of a compressor.

4       Name the applications of axial flow compressor.

5       Difference between reciprocating and rotary compressor.

6       Mention the effects of (i) Regeneration (ii) Intercooling (iii) Reheating.

7       Distinguish between centrifugal and axial flow compressor.

8       Name the advantage and disadvantage of open and closed cycle gas turbine.

9       Write a short note on roots blower.

10 What are the requirements of a combustion chamber in gas turbine?

11 Compare open cycle and closed cycle gas turbine.

12 How are rotary compressor classified?

13 What are the applications of centrifugal compressor?

14 Mention some applications of gas turbine.

15 Distinguish between air craft gas turbine and industrial gas turbine.

 

                                          PART: B [7&14Marks]

1       Explain the working of single stage single acting reciprocating compressor with neat sketch.

2       Explain the working of multi stage single acting reciprocating compressor with neat sketch.

3       Explain the working of gas turbine with regenerator, intercooler and reheater.

4       Discuss in detail about open cycle and closed cycle gas turbine with neat sketch.

5       Describe with a neat sketch the working of turbo-jet engine.

6       Explain the working of ram jet with a neat sketch.

7       Discuss in detail about the working of turbo-propeller engine. State the merits and demerits.

 

 

 

 

 

 

                  UNIT: IV    REFRIGERATION AND AIR CONDITIONING

    

                                                        PART-A [3Marks]

1       What is refrigeration?

2       Difference between heat pump and refrigerator.

3       What are the types of refrigeration?

4       List out the applications of refrigeration.

5       Define (i) Refrigerating effect (ii) COP of refrigerator.

6       What are the types of refrigerants?

7       Define ton of refrigeration (or) state the unit of refrigeration.

8       Mention the desirable properties of refrigerant.

9       Name the psychometric processes.

10 What are the important components of room air conditioner?

11 Distinguish between room and central air conditioning.

12 Mention the factors to be considered in air conditioning for human comfort.

13 What is psychometric chart?

14 Enlist the various loads to be encountered in A/C.

 

                                           PART: B [7&14 Marks]

1       Describe with a neat sketch of a central air conditioning system with its merits and demerits.

2       Describe with a neat sketch of a room air conditioning system with its merits and demerits.

3       Compare vapour compression and vapour absorption refrigeration systems.

4       Explain the working of vapour compression refrigeration system.

5       Explain the working of vapour absorption refrigeration system.

6       Define (i) DPT (ii) WBT (iii) WBT (iv) Humidification (v) Dehumidification (vi) Sensible heating (vii) Sensible cooling.

 

 

 

 

 

 

 

 

 

 

 

               UNIT: V    THERMAL POWER PLANT AND NUCLEAR POWER PLANT

 

                                                          PART: A [3Marks]

 

1       Name any three merits and demerits of thermal power plant.

2       Write briefly on nuclear fuels.

3       Name the major pollutants and their effects from power plants.

4       Define (i) chain reaction (ii) Radioactivity.

5       What is nuclear fission and nuclear fusion?

6       What is the main function of a (i) electrostatic precipitator (ii) scrubber (iii) cyclone separator.

7       Write a short note on fluidized bed combustion.

8       What are the effects of nuclear radiation?

9       Write a short note on disposal of nuclear waste.

10 Difference between nuclear power plant and thermal power plant.

 

 

                                             PART: B [7&14 Marks]

.       

1       Draw the layout of thermal power plant and explain its working.

2       Explain the components of nuclear reactor with a neat sketch.

3       Describe with neat sketch of fast breeder reactor with merits and demerits

4       Draw and explain the layout of  nuclear power plant.

5       Explain the working of CANDU type reactor with neat sketch.

6       Discuss in detail about the working of pressurized water reactor.

7       Describe with neat sketch of boiling water reactor with merits and demerits.       

 

 

 

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