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 | December, 2016 | |
| City, State | new delhi, |
Question Paper
Explain briefly the following with regard to a fuel:
Vapour lock characteristics
Crank-case dilution
Discuss the effect of the following engine variables on flame propagation in s.I. engines:
compression ratio
Fuel-air ratio
Turbulence
(iv)Engine load
Engine speed
Explain the phenomenon of auto-ignition. Explain how auto-ignition is responsible for knocking in S.I. engines.
"Compressed Natural Gas preferable in S.I. engines Justify the statement. is than C.I engines."
Explain briefly the combustion phenomenon in C.I engines.
What do you understand by the term "Ignition delay" List the factors which affect ignition delay in S.I engines.
What are the desirable properties of I.C. engine fuels?
Describe briefly the basic methods of generating air swirl in C.I engines' combustion chambers.
What are the two major reasons for incomplete combustion Name the major pollutants which are emitted from the exhaust of C.I engines due to incomplete combustion.
What are the advantages of liquid and gaseous fuels over solid fuels?
A six-cylinder, four-stroke petrol engine having a bore of 90 mm and a stroke of 100 mm has a compression ratio of 7·0. The relative efficiency with reference to indicated thermal efficiency is 55% when the indicated specific fuel consumption is 0·3 kg/kWh. Estimate the calorific value of the fuel and fuel consumption (in if i.m.e.p. is 8·5 bar and the speed of the engine is 2500 rpm.
A six-cylinder, four-stroke diesel engine develops 125 kW and 3000 rpm. Its brake specific fuel consumption is 0·20 kg/kWh.Calculate the quantity of the fuel to be injected per cycle per cylinder.Specific
gravity of the fuel may be taken as 0.85.
Vapour lock characteristics
Crank-case dilution
Discuss the effect of the following engine variables on flame propagation in s.I. engines:
compression ratio
Fuel-air ratio
Turbulence
(iv)Engine load
Engine speed
Explain the phenomenon of auto-ignition. Explain how auto-ignition is responsible for knocking in S.I. engines.
"Compressed Natural Gas preferable in S.I. engines Justify the statement. is than C.I engines."
Explain briefly the combustion phenomenon in C.I engines.
What do you understand by the term "Ignition delay" List the factors which affect ignition delay in S.I engines.
What are the desirable properties of I.C. engine fuels?
Describe briefly the basic methods of generating air swirl in C.I engines' combustion chambers.
What are the two major reasons for incomplete combustion Name the major pollutants which are emitted from the exhaust of C.I engines due to incomplete combustion.
What are the advantages of liquid and gaseous fuels over solid fuels?
A six-cylinder, four-stroke petrol engine having a bore of 90 mm and a stroke of 100 mm has a compression ratio of 7·0. The relative efficiency with reference to indicated thermal efficiency is 55% when the indicated specific fuel consumption is 0·3 kg/kWh. Estimate the calorific value of the fuel and fuel consumption (in if i.m.e.p. is 8·5 bar and the speed of the engine is 2500 rpm.
A six-cylinder, four-stroke diesel engine develops 125 kW and 3000 rpm. Its brake specific fuel consumption is 0·20 kg/kWh.Calculate the quantity of the fuel to be injected per cycle per cylinder.Specific
gravity of the fuel may be taken as 0.85.
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)
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- School of Health Science (SOHS)
- School of Humanities (SOH)
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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.