Exam Details
| Subject | Combustion Engineering | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering (DMEVI)& B.Tech. MECHANICAL ENGINEERING 1-4 (BTMEVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
What are the different kinds of fuels used in an I.C. engine? What are the important properties which an S.I. engine fuel possesses?
What are the essential requirements to be fulfilled by a fuel injection system for C.I. engines? What is the most common injection system used in multi-cylinder diesel engines?
Distinguish clearly between 'Octane Number' and 'Cetane Number'. What is their significance in rating of fuels for S.I. and C.I. engines?
State the relative advantages and disadvantages of battery and magneto-ignition systems.
Explain briefly the combustion phenomenon in S.I. engines. What do you mean by pre-ignition How can it be detected?
What is the difference between Higher Heating Value and Lower Heating Value of the fuel?
Explain the phenomenon of knocking in S.I. engines. What are the different factors which influence the knocking? Describe the methods used to suppress it.
What do you mean by stoichiometric air-fuel ratio Calculate the stoichiometric air-fuel ratio of natural gas (CH4).
What are the main functions of nozzle? Explain anyone type of nozzle with a neat diagram.
"While volatility of the fuel is a determining factor in the selection of fuels for S.I. engines, ignition quality of the fuel is the primary deciding factor for C.I. engines." Discuss the statement briefly.
Calculate the amount of theoretical air required for the combustion of 1 kg of acetylene (C2H2) to CO2 and H20.
A four-cylinder, four-stroke petrol engine of cylinder bore and stroke each equal to 77 mm has a compression ratio of 8·5 1. The relative efficiency is 50% when s.f.c. on IP is 0·28 k.g/kWh.
Determine:
The C.V. of the petrol in MJ/kg
The petrol consumption in kg/hr
Given that the i.m.e.p. is 950 kPa when the engine speed is 3000 rpm. Take y for air 1·4.
What are the essential requirements to be fulfilled by a fuel injection system for C.I. engines? What is the most common injection system used in multi-cylinder diesel engines?
Distinguish clearly between 'Octane Number' and 'Cetane Number'. What is their significance in rating of fuels for S.I. and C.I. engines?
State the relative advantages and disadvantages of battery and magneto-ignition systems.
Explain briefly the combustion phenomenon in S.I. engines. What do you mean by pre-ignition How can it be detected?
What is the difference between Higher Heating Value and Lower Heating Value of the fuel?
Explain the phenomenon of knocking in S.I. engines. What are the different factors which influence the knocking? Describe the methods used to suppress it.
What do you mean by stoichiometric air-fuel ratio Calculate the stoichiometric air-fuel ratio of natural gas (CH4).
What are the main functions of nozzle? Explain anyone type of nozzle with a neat diagram.
"While volatility of the fuel is a determining factor in the selection of fuels for S.I. engines, ignition quality of the fuel is the primary deciding factor for C.I. engines." Discuss the statement briefly.
Calculate the amount of theoretical air required for the combustion of 1 kg of acetylene (C2H2) to CO2 and H20.
A four-cylinder, four-stroke petrol engine of cylinder bore and stroke each equal to 77 mm has a compression ratio of 8·5 1. The relative efficiency is 50% when s.f.c. on IP is 0·28 k.g/kWh.
Determine:
The C.V. of the petrol in MJ/kg
The petrol consumption in kg/hr
Given that the i.m.e.p. is 950 kPa when the engine speed is 3000 rpm. Take y for air 1·4.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Advanced Dynamics Of Machine
- Automobile Engineering
- Combustion Engineering
- Computer Aided Manufacturing
- Computing Aided Design
- Design of Machine Elements
- Engineering Metallurgy
- Engineering Thermodynamics
- Experimental Stress Analysis
- Finite Element Analysis
- Fluid Mechanics
- Heat And Mass Transfer
- Heat Transfer
- I.C. Engines
- Industrial Engineering
- Industrial Ergonomics
- Industrial Measurement And Quality Control
- Industrial Organization And Management
- Kinematics and Dynamics of Machines
- Machine Design - I
- Machine Design-Ii
- Machine Drawing
- Machines Tools
- Maintenance Engineering
- Material Science
- Materials Handling
- Mechanical System Design
- Mechanical Vibration
- Mechanics Of Materials
- Mechatronics
- Metrology
- Metrology And Quality Control
- Non-Conventional Energy Resources
- Non-Destructive Testing
- Nuclear Power Engineering
- Optimisation Techniques In Engineering
- Optimization For Engineering Design
- Power Plant Engineering
- Power Transmitting Elements
- Product Development And Design
- Production And Operations Management
- Production Technology - Ii
- Production Technology-I
- Refrigeration And Air Conditioning
- Refrigeration System
- Robotics
- Safety Engineering
- Technical Entrepreneurship
- Thermal Engineering
- Thermal Engineering - I
- Thermofluid Engineering
- Total Quality Management (Tqm)
- Tribology
- Turbo Machines
- Unconventional Manufacturing Processes
- Welding Engg.