RTU 2016 Question Paper Semester VIII Mechanical Engineering Power Generation

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B.Tech. VIII semester (Main/Back) Examination, May 2016
r- c Mechanical Engg.
rd
€ 8ME3 A Power Generation

Time : 3 Hours Maximum Marks : 80
Min. Passing Marks : 24
Instructions to Candidates:
Attempt any Jive questions, selecting one question
from each unit. All questions
carry equal marlcs. (Schematic diagrams must be shown wherever
necessary.
Any data you feel missing suitably be assumed and stoted clearly.)
units of quantities used/calculated must be stated clearly

Unit - I
1. a) Define the following terms :

D Load factor
ii) Plant factor
iii) Demand factor
tD Diversity factor
v) Reserve factor (2x5=10)
b) what is present worth concept? How it is estimated (2+4=6)
OR
1' a) A thermal poryT plllt of 210 MW capacity has the maximum load of 160
' MW. Its annual load factor is 0.6. The coal ionsumption is I kg per
energy generated and the cost of coal is Rs. 450 peito*".
kWh of
Cuirrtut"
D The annual revenue earned if energy is sold at Re I per kwh
ii) The capaciry factor of the plant (5+3:g)
b) What are the considerations to be made while selecting the location for a
thermalpowerplant (S)

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[Cont...

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' a) . Discuss various efficiencies for studying the pqrfonnance of a steam turbine(8)
2.
,ili""
b) Explainthe effect o-f,variation of steam conditiqn on thennal efficiency of (8)
.^.
' steam Power Plant

OR
2. Sketch the layout of a steam of steam power plant and explain the following
i) coal & ash circuit
ii) air & gas circuit
iii) feed water & steam flow circuit
iv) cooling water circuit (8+2+2+2+2:16)
.v
, Unit'III
plant over
What are the advantages and disadvantages of gas turbine power
3. a)
ji;iil;;;;r",; (6)
performance characteristics of a gas turbine power plant
(10)
b) Discuss the
'nn
OR
power
3. a) Enumerate and explain briefly the essential elements of hydroelectric
pl."i (10)
8'5
b) A turbine is to operate under a head of 24m a,. 2OA rpm. The discharge is
m3/s. Ifthe orerall effiiiency is 88% , determine
D power generated
ii) specific sPeed of the turbine
iii) type ofturbine
Unit - IV
4. a) What do you understand by teetering of rotor? In what cases it is required?
(4+2=6)

b) Explain the following terms :
r) drag force
ii) lift force
iii) pitch angle
iv) chord
(2x5=10)
v) angle of attack

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OR
major applications of windfi"#Tr0i
a) Def,rne the term "solidity' ' Explainthe
free
axis wind turbing(HAyrl is installed at a location havirig
b) Ahorizontal fius tht*t blades attached
wind velocity ot r!.Jr.-'iir. sb,,,ot"ri;;^;"q
to the hub. Find the rotationut ,p..olriit;
t"rbi* ior optional extraction(6)

unit-v " (6)
photo-voltaic energy conveTl:n
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5. a) Describe the principle of solar
collectors and explain the working
-,
b) classify differgnt typ.:, of solar thermal : (10)
of liquid flatplate.on.rtoil"itt,'nliil;ty;ilt"h
OR
5. Write short notes on anY four
a) PYranometer
b) PYreheliometer
c) solar time ,

d) compoundparaboiic concentrator
e) solai PV aPPlications (4x4=16)
0 solar cookers

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