Maharashtra State Board of Technical Education 2008 Diploma Mechanical Engineering Power Plant Engineering - Question Paper

Sample ques. Paper
Course Name : Diploma in Mechanical Engineering
Course Code : ME
Semester : Fifth
Subject : Power Plant Engineering
Marks : 80 Time: three Hrs

Instructions:
1. All ques. are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. presume suitable data if necessary.
5. Preferably, write the answers in sequential order.

Q.1 ans any 4 of subsequent. [Marks:16]
a) describe energy intensity? provide sector wise energy consumption in India
b) What do you mean by subcritical and supercritical boilers.
c) State kinds of Nuclear reactor. Mention Nuclear reactor used in India.
d) Compare Gas turbine power plant with IC engine power plant
e) Differentiate waste heat boiler with conventional boiler
f) State the essential components of solar flat plate collector.

Q. ans any 3 of subsequent. [Marks:12]
a) When does reheating of steam become necessary .How reheating of steam increases work
done show on PV and TS diagram?
b) Sate the characteristics of Pulverized coal fuel. Mention their advantages.
c) Differentiate ranging from fission and fusion reaction.
d) Draw the tagged sketch of replaced Gas turbine power plant, state 2 advantages of
Gas turbine power plant.

Q.3 ans any 2 of subsequent. [Marks:12]
a) elaborate the impurities current in raw water? State the method to remove these
impurities from raw water? discuss soda lime process of softening.
b) Draw the tagged sketch of boiling water reactor. Compare their advantages and
disadvantages with pressurized water reactor
c) Differentiate sensible and latent heat recovery. How will you use waste heat from
Nuclear power plant for green house cultivation?

Q.4 ans any 4 of subsequent. [Marks:16]
a) Draw the tagged sketch to show working principle of electrostatic precipitator
b) Outline the effect of nuclear waste on human being and environment.
c) Point out tech. difference ranging from vertical axis and horizontal axis wind mills.
d) Draw the tagged sketch of Magneto hydrodynamic power plant .States its advantages.
e) Brief the objectives of nuclear fuel used for nuclear power plant.
f) What is the role of combustor used in gas turbine plant? State it different requirements.

Q.5 ans any 3 of subsequent. [Marks:12]
a) State the objectives of energy cascading.
b) discuss the advantageous & limitations of tidal power plants.
c) The daily load for a power plant is provided by subsequent formula
L= 400+10t – t2
Where t is time in hours from 0 to 24 hours and Load L in MW
1. compute value of maximum load and when it occurs.
2. Plant load factor.
d) What do you understand by term depreciation? How it is determined?

Q.6 ans any 3 of subsequent. [Marks:12]
a) Draw the brayton cycle on PV and TØ diagram. State parameters which affect
performance of brayton cycle.
b) Distinguish underfeed and over feed stoker with respect to working principle.
c) Illustrate economic load sharing ranging from power generating units.
d) elaborate the major electrical equipments used in power. Why step-up transformers are
used in power plant.

Earning:   Approval pending.