## Wednesday, August 29, 2012

### ME2301 THERMAL ENGINEERING ANNA UNIVERSITY NOV/DEC 2010 PREVIOUS YEAR QUESTION PAPER

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2010
Fifth Semester
Mechanical Engineering
ME 2301 — THERMAL ENGINEERING
(Regulation 2008)
Time : Three hours Maximum : 100 Marks
PART A — (10 × 2 = 20 Marks)
1. Why is Carnot cycle not used in real applications?
2. Draw the P-V diagram for a dual cycle.
3. Draw the valve timing diagram for a CI engine.
4. What is the indicated power of four cylinder engine if BP with 4-cylinder working is 18.75 kW and BP with 3-cylinder working is 13.06 kW.
5. What are the factors reducing the final velocity of steam in nozzle flow?
6. What is the difference between impulse and reaction turbine?
7. How is the inter cooler used to reduce the power consumption of compressor?
8. List the advantages of multistage compressor over single stage compressor.
9. What is dew point temperature?
10. Define the COP of refrigerators.

PART B — (5 × 16 = 80 Marks)

11. (a) Derive an expression for the air standard efficiency of Diesel cycle and
then deduce it for mean effective pressure. [Marks 16]
Or
(b) A six cylinder four stroke petrol engine has a swept volume of 300 cubic cm per cylinder, a compression ratio of 10 and operates at a speed of 35000 rpm. If the engine is required to develop an output of 73.5 kW at this speed, calculate the cycle efficiency, the necessary rate of heat addition, the mean effective pressure, maximum temperature of the cycle and efficiency ratio. The pressure and temperature before is entropic
compression are 1.0 bar and 15°C respectively, take Cv = 0.72 and ? = 1.4. [Marks 16]

12. (a) (i) Explain the working principle of 4-stroke engine. (Marks 8)
(ii) With a neat diagram explain the working of battery ignition system. (Marks 8)
Or
(b) (i) Describe the working of Diesel fuel pump. (Marks 8)
(ii) Explain the pressure feed lubrication system with a neat diagram. (Marks 8)

13. (a) In a steam nozzle, the steam expands from 4 bar to 1 bar. The initial velocity is 60 m/s and initial temperature is 200°C. Determine the exit velocity if the nozzle efficiency is 92% and the dryness fraction at exit. [Marks 16]
Or
(b) A single row impulse turbine develops 132.4 kW at a blade speed of 175 m/s using 2 kg of steam per sec. Steam leaves the nozzle at 400 m/s. Velocity coefficient of the blade is 0.9. Steam leaves the turbine blades axially. Assuming no shock determine the nozzle angle, blade angles at entry and exit. [Marks 16]

14. (a) A single acting 14 cm × 10 cm reciprocating compressor is operating at P1 = 1 bar, T1 = 20°C, P2 = 6 bar and T2 = 180°C. The speed of compressor is 1200 rpm and shaft power is 6.25 kW. If the mass of air delivered is 1.7 kg/min, calculate the actual volumetric efficiency, the indicated power, the isothermal efficiency, the mechanical efficiency and the overall efficiency. [Marks 16]
Or
(b) A single stage reciprocating air compressor has clearance volume 5% of stroke volume of 0.05 m3/sec. The intake conditions are 95 kN/m2, 300 K.The delivery pressure is 720 kN/m2. Determine the volumetric efficiency referred to (i) intake conditions (ii) atmospheric conditions of 100 kN/m2 and 290 K (iii) FAD and (iv) power required to drive the compressor, if the ratio of actual to indicated power is 1.5. Take index of compression
and expansion as 1.3. [Marks 16]

15. (a) One kg of air at 35°C DBT and 60% RH is mixed with 2 kg of air at 20°C DBT and 13°C dew point temperature. Calculate the vapour pressure and dew point temperature of stream one, enthalpy of both the streams and specific humidity of the mixture. [Marks 16]

(b) The temperature range in a Freon-12 plant is –6°C to 27°C. The compression is is entropic and there is no cooling of the liquid. Find the COP assuming that the refrigerant (i) after compression is dry and saturated (ii) leaving the evaporator is dry and saturated. The properties of F-12 are given in the table :
Sl.No. t°C hf hg sf sg Cp
1 –6 413 571 4.17 4.76 0.641
2 27 445 585 4.28 4.75 0.714 [Marks 16]

### ANNA UNIVERSITY 5TH SEMESTER STUDY MATERIALS FOR ALL DEPARTMENT SUBJECT NOTES/LECTURE NOTES/QUESTION BANK/PREVIOUS YEAR QUESTION PAPER/2 MARKS QUESTION

ANNA UNIVERSITY,CHENNAI
THIRD YEAR SUBJECT NOTES,QUESTION BANK,QUESTION PAPER
(REGULATION 2008)
FIFTH Semester Anna University Allinone Materials
(Common To All Colleges In TAmilnadu)
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Dear Students Collect All Your Subject Materials Like Subject/Lecture Notes,Question Bank,Previous Question Papers,Question Bank,2 Marks Question With Answers,Model Question Papers

DEPARTMENT OF ELECTRONICS  AND COMMUNICATION ENGINEERING( 5TH  SEMESTER)

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING( 5TH  SEMESTER)

DEPARTMENT OF CIVIL ENGINEERING( 5TH  SEMESTER)

DEPARTMENT OF INFORMATION TECHNOLOGY( 5TH  SEMESTER)

- MORE DEPARTMENT AND QUESTION PAPERS WILL BE UPDATED INSTANTLY
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### ANNA UNIVERSITY CSE 5TH SEMESTER SUBJECT NOTES/LECTURE NOTES/QUESTION BANK/QUESTION PAPER/2 MARKS AND 16 MARKS

ANNA UNIVERSITY,CHENNAI
THIRD YEAR CSE  5TH SEMESTER SUBJECT NOTES,QUESTION BANK,QUESTION PAPER
(REGULATION 2008)
COMPUTER SCIENCE AND ENGINEERING 5TH SEMESTER NOTES

Third Year CSE Fifth Semester
THEORY
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CS2301 Software Engineering
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MA2265 Discrete Mathematics
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CS2302 Computer Networks
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CS2303 Theory of Computation
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CS2304 System Software
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PRACTICAL
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CS2307 Network Lab
|Manual|Voce Viva |Extra Programs|
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CS2308 System Software Lab
|Manual|Voce Viva |Extra Programs|
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CS2309 Java Lab
|Manual|Voce Viva |Extra Programs|
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### PROGRAMMING PARADIGMS CS2305 ANNA UNIVERSITY SUBJECT NOTES/LECTURE NOTES,QUESTION PAPER,QUESTION BANK,2 MARKS AND 16 MARKS QUESTIONS

AIM:

To understand the concepts of object-oriented, event driven, and concurrent programming paradigms and develop skills in using these paradigms using Java.

UNIT I OBJECT-ORIENTED PROGRAMMING – FUNDAMENTALS
UNIT II OBJECT-ORIENTED PROGRAMMING – INHERITANCE
UNIT III EVENT-DRIVEN PROGRAMMING
UNIT IV GENERIC PROGRAMMING
UNIT V CONCURRENT PROGRAMMING

TEXT BOOK:
1. Cay S. Horstmann and Gary Cornell, “Core Java: Volume I – Fundamentals”, Eighth Edition, Sun Microsystems Press, 2008.

REFERENCES:
1. K. Arnold and J. Gosling, “The JAVA programming language”, Third edition, Pearson Education, 2000.
2. Timothy Budd, “Understanding Object-oriented programming with Java”, Updated Edition, Pearson Education, 2000.
3. C. Thomas Wu, “An introduction to Object-oriented programming with Java”, Fourth Edition, Tata McGraw-Hill Publishing company Ltd., 2006.
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CS2305 PROGRAMMING PARADIGMS SUBJECT NOTES/LECTURE NOTES : CLICKHERE
CS2305 PROGRAMMING PARADIGMS QUESTION PAPERS: NOV/DEC 2010/2011 -  CLICKHERE | MAY/JUNE 2012 |

CS2305 PROGRAMMING PARADIGMS QUESTION BANK: CLICKHERE

CS2305 PROGRAMMING PARADIGMS 2 MARKS AND 16 MARKS: CLICKHERE
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