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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