GTU previous question papers
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Subject code: 151904
Subject Name: Power Plant Engineering
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Draw general lay of modern steam power plant label major component and state function of each component.
(b) A Power plant has following annul factor:
Load factor = 0.75
Capacity factor = 0.60
Maximum demand is = 60 MW
Estimate (a) The annual Energy production
(b) The reserve capacity over and above the peak
(c) The hours during which the plant not in Service.
Q.2 (a) Explain the constructional difference between Low pressure and High
(b) Explain with neat construction and working of sketch La Mont Boiler
(b) Explain with neat sketch construction and working of Benson Boiler
Q.3 (a) Explain the traveling grate stoker with help of neat sketch
(b) What are the advantages and Disadvantages of Pulverized coal firing
Q.3 (a) Explain the working of Electrostatic precipitator with neat sketch
(b) Classify various Ash handling system. Explain Pneumatic and steam jet ash
Q.4 (a) Classify Different types of Fan .Explain why are centrifugal backwardcurved
blading normally used for Forced Draft. Fan
(b) Compute the required motor capacity needed for F.D. Fan under following
Coal rate : 10 tonnes/h
Col analysis : C78.0 , H 3.0, O 3.0, S 1.0 ,
M 7.0, A 8.0
Excess air : 30 %
Plenum chamber pressure : 180 mm of water gauge
of the Fan : 60%
Room temperature : 300 C
Q.4 (a) Classify different types of cooling tower used in power plant. Explain
Natural draft cooling tower also explain the reason of its hyperbolic shape
(b) Exhaust steam having a quality of 0.9 enter a surface condenser at an
absolute pressure of 0.13 bar and comes outs as a water at 450 C. The
circulating water enters at 30 0 C and leaves at 400 C. Estimate quantity of
circulating water and condenser efficiency.
Q.5 (a) What are fission fragment and fission product? Explain Fission Reaction
with an example
(b) Explain with neat sketch Pressurizes water Reactor(PWR) Explain function
of pressurizer in PWR
Q.5 (a) Explain with neat sketch arrangement of a Diesel power plant explain in
brief function of each system
(b) Explain with neat sketch construction and working of CANDU type reactor