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[Total No. ofPages 02otal No. of Questions 091
B.Tech. Sem. 3"d)
APPLIED THERMODYNAMICS - I
SUBJECTCODE: ME-209
PaoerID: [A08051lNote : Please ill subjct code 8nd psper ID on OMRI
Time: 03Hours MaximumMarks: 60Instruction to Candidates:
1) Section A is Compulsory.
2) Attempt any Four questions rom Section B3) Attempt any Two questions rom Section C
Section - AQI) (10x2=20)
a) What do you understand ypre-ignition n spark gnition engines?
b) What s critical point?
c) What s the difference etween mountings nd abcessories?
d) List the methods or improving effrciency f Ramkine ycle.
e) Name various ypes of nozzles.
D Define degree freaction.
d List various methods f goveming team urbines
h) Discuss he merits of surface ondenser.
i) What s the use of compressed ir in industry.
, What s the effect ofclearance n working of a reciprocating air compressor.
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Q2,) Discuss he'problem f combustion n compression gnition engines learlybringing out he mportance f delay period.
Q3) Draw alabelled ketch f Lancashire oiler-
Q1) Explainthe hysical oncept f critical pressure atio'
Q5) tVhatis bleeding How does t effect he cycle effrciency'
Q6) Define he term weak (lean) mixture, rich mixture and stochiometric(chemically orrect mixture
Section C(2x10=20)
Q7) Determine he enthalpy, olume, ntemal energy of super heated team tl5
bar pressure nd 220"C. The volume of water may be neglected nd akes
specific heat of super heat equal o Z.2kJkgk.
Q8,) Steam s supplied o a three-stage urbine at 40 bar and 400oc and he exhaust
to the condenser akes place at 50 millibar, with a wetness raction of l2Yo
The work developed n the hree stages: igh stage intermediate tage:low
stage:: I :2. The condition ine may be assumed sstraight ine determine.
(a) Condition at entry o each tage.(b) StageeffrciencY.(c) Reheat actor.(d) Intemal efficiency fturbine.
Qg) The pressure nder he air baffle of a surface ondenser s 5.2 cm of Hg'
Temierature f the mixture eaving he cooler section s 25"C. Assuming
avaiiable oolingwater at 15.5' C and external ooler'might ower the
temperature o 20"c explain the effect of this on the quantity of vapouraccompanying irto the pump section.
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