Search Your Paper

Tuesday, April 25, 2017

Roll No. ......................
Total No. of Questions : 09]
B. Tech. (Sem. – 4th)
SUBJECT CODE : ME – 208 (2008 Batch)
 Paper ID : [A0811]
Time : 03 Hours
Instruction to Candidates:
1) Section - A is Compulsory.
2) Attempt any Four questions from Section - B.
3) Attempt any Two questions from Section - C.
Section – A
QI) eox2=20)
a) What do you understand by octane and cetane number rating of fuel.
b) What are the objectives of supercharging the IC engines.
c) Explain why aerofoil blading is needed in axial flow compressors?
d) What is delay period and what are the factors that affect delay period.
e) SI engines are quantity governed while CI engines are quality governed.
Explain. D For the given air flow and pressure ratio the vane type blower needs less work than a roots blower. Give reasons.
g) Define the term slip factor, power input factor.
h) Write down the methods of cooling the turbine blades.
t) Define the term thrust, thrust power of jet propulsion system.
j) State the assumptions made in an ideal cycle analysis of gas turbines.

Section - B
Q2) A six-cylinder gasoline engine operates on four stroke cycle. The bore of each
cylinder is 80 mm and the stroke is 100 mm. At speed Of 4000 rpm the fuel
consumption is 20 kg/hr and the torque developed is 150 Nm. Calculate (i) the
brake power (ii) the brake mean effective pressure (iii) brake thermal efficiency
if calorific value of the fuel is 43000 kJ/kg.
Q3) Discuss the working of vane type blower with neat sketch.
Q4) With the aid of neat diagram, explain the working principle of ramjet engine.
Q5) A flying turbojet engine propels at speed of 880 km/hr and draws air at the rate of 50 kg/s. Isentropic enthalpy drop in the nozzle is 190 kJ/kg and its velocity
coefficient is 0.96. Fuel air ratio used is 0.012. The calorific value of fuel used
is 46000 Kj/kg and combustion efficiency is 95Vo. Find thermal, propulsive
and overall efficiency.
Q6) Define polytropic efficiency of compressor with the help of T-S diagram and
obtain an expression for polytropic efficiency.

Section - C
Q7) A centrifugal compress runs at 16000 rpm and power required to run the
compressor amounts to 2300 kW. The outer diameter of the impeller is 50 cm.
The uniform width of the casing of vortex chamber between impeller and
diffuser is 4 cm. Static conditions at a radius of 27 cm were measured and
it were equal to 2.4 bar and 390 K. Surrounding pressure is lbar. Assuming
slip factor of 0.94, find the mass flow rate of gas, the resultant velocity
and temperature at the given radius of 27 cm. Assume cp = 1.005 kJ/kgK and
 = 1.4

Q8) The first stage of an axial compressor is designed on free vortex principles,
with no on let guide vanes. The rotational speed is 6000 rpm and the stagnation
temperature rise is 20K. The hub-tip ratio is 0.60, work done factor is 0.93 and
isoentropic efficiency of the stage is 0.89. Assuming an inlet velocity of 140
m/s and ambient conditions of 1.01 bar and 288 K, calculate (i) tip radius and
corresponding rotor air angles, if the Mach number relative to the tip is limited
to 0.95 (ii) mass flow entering the stage (iii) stage stagnation pressure ratio and
power input (iv) rotor air angles at the root section. Assume cp = 1.005 kJ/kgK
and  = I.4.

Q9) In a gas turbine power plant the temperature ratio Tmax/ Tmin,in is fixed as 4. The system has compression in two stages with perfect intercooling in between the
stages followed by single stage expansion in gas turbine. Isoentropic efficiency
of each compressor and turbine is 0.85 and 0.9 respectively. Minimum
temperature of the cycle is 300K. Assuming the pressure ratio of the cycle as
6. Find the network output, heat input and thermal efficiency of the cycle.

Take Pmin = P1, = 1 bar, cp = 1.005kJ/kgK and   = l-4.


Post a Comment

North India Campus



North India Campus. Powered by Blogger.

Welcome to North India Campus

Search Question Paper


1st & 2nd Semester BE 1st Semester B.Com 1st Semester BBA 1st Semester BCA (D) 1st Semester Bsc. IT (D) 1st Semester Bsc. IT 1 1ST Semester M.SC IT(D) 1st Semester M.Tech 1ST Semester MBA 1st Semester MCA 1st Semester MCA (D) 2nd Sem B.Com 2nd Sem BB 2nd Sem BBA 2nd Sem BCA 2nd Sem BCA (D) 2nd Sem BSC IT(D) 2nd Sem BSC(IT) 2nd Semester MBA A Foundation Course in Human Values and Professional Ethics Accounting and Financial Management Accounting and Financial Managementm ACCOUNTING FOR MANAGEMENT Adolescence and Family Education B.Ed (2012) Adolescence And Family Education B.Ed (Dec 2013) Adolescence And Family Education B.Ed (Dec 2014) ADVANCE SOFTWARE ENGINEERING Advanced Accounting 2 ADVANCED COMMUNICATION SYSTEMS ADVANCED MATHEMATICS FOR ENGINEERS Aligarh Muslim University Applied Physics 1 B.Ed (Dec 2008) B.Ed (Dec 2009) B.Ed (Dec 2011) B.Ed (Dec 2012) B.Ed (Dec 2013) B.Ed (Dec 2014) B.Ed (June 2008) B.Ed (June 2009) B.Ed (June 2015) BA 1 Syllabus Bachelor in Science Fashion and Technology Basic Accounting Basic Chemistry Basic Electrical Engineering Basic Electronics Basic Mathematics BSC 1 Basoc Accounting BBA 1 BBA 2 BCA Question Papers BCA Syllabus 1 Bridge Course in Mathematics Bsc.IT Business Communication-1 Business Communication-2 Business Communication-I 2 Business Environment 2 Business Laws 1 Business Mathematics Business Organisation and Management Business Statistics 2 C C Programming C Programming Bsc IT 1 C Programming Lecture Videos CADM 1st Semester Communication 2 Communication and Soft Skills Communication Skills Communication Skills 1 Communicative English Computer and Education B.Ed (Dec 2011) Computer and Education B.Ed (Dec 2012) Computer Applications Computer Fundamental Computer Graphics Video Lecture Computer in Education B.Ed (Dec 2008) Computer in Education B.Ed (Dec 2009) Computer In Education B.Ed (Dec 2013) Computer in Education B.Ed (Dec 2014) Computer Mathematical Foundation MCA D Computer Networks 1st Semester Computer Operating System Computer Organization and Assembly Language Computer System Architecture 2 Corporate Accounting Curriculum and Instruction B.Ed (Dec 2009) Curriculum and Instruction B.Ed (Dec 2011) Curriculum and Instruction B.Ed (Dec 2012) Curriculum and Instruction B.Ed (Dec 2013) Curriculum and Instruction B.Ed (Dec 2014) Curriculuman and Instruction B.Ed (Dec 2008) DATA COMMUNICATION NETWORK Data Structure 2 Data Structures 2 data structures 2 BCA D Data Structures Through C 2 Database Management with Microsoft Access Bsc IT 1 Delhi University News Desktop Publishing Tools 2 Digital Circuits and Logic Design 2 Digital Circuits and Logic Design 2 BCA D Digital Electronics 2 Digital Electronics Fundamentals 2 Distance Education B.Ed (Dec 2008) Distance Education B.Ed (Dec 2009) Distance Education B.Ed (Dec 2011) Distance Education B.Ed (Dec 2012) Distance Education B.Ed (Dec 2013) Distance Education B.Ed (Dec 2014) Dot Net Interview Questions & Answers. Education and Evaluation B.Ed (Dec 2009) Education and Society B.Ed (Dec 2008) Education and Society B.Ed (Dec 2009) Education and Society B.Ed (Dec 2011) Education and Society B.Ed (Dec 2012) Education and Society B.Ed (Dec 2013) Education and Society B.Ed (Dec 2014) Education Technology B.Ed (Dec 2009) Educational Evaluation B.Ed (Dec 2008) Educational Evaluation B.Ed (Dec 2011) Educational Evaluation B.Ed (Dec 2012) Educational Evaluation B.Ed (Dec 2013) Educational Evaluation B.Ed (Dec 2014) Educational Technology B.Ed (Dec 2008) Educational Technology B.Ed (Dec 2011) Educational Technology B.Ed (Dec 2012) Educational Technology B.Ed (Dec 2013) ELECTRONICS SYSTEM DESIGN Engineering Drawing and Graphics Engineering Mathematics Engineering Question Paper set 1 Engineering Syllabus English and Communication Skills English and Communication Skills 2 Environmental Science 2 Finaicial Accounting Financial Accounting Financial Management 2 Sem Fundamentals of Information Technology Bsc 1 Guidance and Counseling B.Ed (Dec 2008) Guidance and counseling B.Ed (Dec 2009) Guidance and Counseling B.Ed (Dec 2011) Guidance and Counseling B.Ed (Dec 2012) Guidance and Counseling B.Ed (Dec 2013) HIV and Aids Education B.Ed (Dec 2011) HIV and Aids Education B.Ed (Dec 2012) HIV and Aids Education B.Ed (Dec 2013) Hotel Management and Air Lines Syllabus HP University News Human Resource Management Human Resource Management 2 Information Management Information Technology for Management Intoduction to microprocessor 2 BCA D Introduction of Computers BBA1 Introduction to Computers 2 Introduction to I.T MCA D Introduction to Information Technology Introduction to Information Technology(BCA) Kurukshetra University News Lecture 20 Clipping -- Lines And Polygons Macro Economics 2 Management Syllabus Managerial Economics Marketing Management 2 Master Of Technology M-Tech Syllabus MBA Papers MCA Notes MCA Question Papers Mercantile Law 2 Metal Cutting Question Paper Metal Forming Question Paper Micro Economics Network Security NEURAL NETWORKS & FUZZY LOGIC Object Oriented Programming in C++ Object Oriented Programming in Cpp OOP CPP 2 Operating system (BCA) Operating System Bsc IT 1 Organisational Behaviour Organization Behaviour 2 Other Universities Others Panjab University News PCM 2 BCA D PGDCA Pharmacy Syllabus Principles and Practices of Management principles of management 2 Production and Operations Management 2 Programming in C Programming in C MCA D Programming Logic Development with C Psychology of Learning and Development B.Ed (Dec 2013) Psychology of Learning and Development B.Ed (Dec 2008) Psychology of Learning and Development B.Ed (Dec 2009) Psychology of Learning and Development B.Ed (Dec 2011) Psychology of Learning and Development B.Ed (Dec 2012) PTU Affiliated Colleges of Integerated College PTU Affiliated Colleges of Management College PTU Affiliated Colleges of Architecture PTU Affiliated Colleges of Engineering PTU Affiliated Colleges of Pharmacy College PTU Forms Download PTU News and Events Quantitative Techniques RDBMS 2 RDBMS-I 2 Relational Database Management System Research Methodology 2 SAD 2 BCA D Syllabus of Computer Applications Syllabus of Journalism and Mass Communication Syllabus of Medical Laboratory Science System Analysis and Design System Analysis and Design 2 System Analysis and Design MCA D Teacher and School B.Ed (Dec 2008) Teacher and School B.Ed (Dec 2009) Teacher and School B.Ed (Dec 2011) Teacher and School B.Ed (Dec 2012) Teacher and School B.Ed (Dec 2013) Teacher of English B.Ed (Dec 2009) Teaching of English B.Ed (Dec 2008) Teaching of English B.Ed (Dec 2011) Teaching of English B.Ed (Dec 2012) Teaching of English B.Ed (Dec 2013) Teaching of Mathematics B.Ed (Dec 2009) Teaching of Mathematics B.Ed (Dec 2011) Teaching of Mathematics B.Ed (Dec 2012) Teaching of Mathematics B.Ed (Dec 2013) Teaching of Science B.Ed (Dec 2008) Teaching of Science B.Ed (Dec 2009) Teaching of Science B.Ed (Dec 2011) Teaching of Science B.Ed (Dec 2012) Teaching of Science B.Ed (Dec 2013) Teaching of Social Studies B.Ed (Dec 2008) Teaching of Social Studies B.Ed (Dec 2011) Teaching of Social Studies B.Ed (Dec 2012) Teaching of Social Studiess B.Ed (Dec 2013) Teaching of Social Study B.Ed (Dec 2009) Technical Communication UGC NET Computer Science Question Paper Uttarakhand Open University Video Lecture Web Technologies 1st Semester Web Technologies 2 Welding Technology Question Paper Workshop on IT and E-Commerce 2