Exam Details
| Subject | I.C. Engines | |
| 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, 2015 | |
| City, State | new delhi, |
Question Paper
What are the advantages and disadvantages of a two-stroke cycle engine over a four-stroke cycle engine?
What do you mean by the term "Ignition" How is it related with "Combustion" What are the requirements of an ignition system for an I.C. engine?
What are the functions of the carburettor and fuel injection systems?
What is the importance of lubrication in I.C. engines?
An engine having compression ratio of6 is working on the Otto cycle. The compression ratio is increased from 6 to 7. Compare the change in efficiency due to this. Assume 1·4.
The four important temperatures in a diesel cycle are 30°C, 1500° 2850° C and 550° the last one being obtained at the end of compression. Calculate the air standard efficiency. Assume y =1·4.
Why is a cooling system necessary in an engine Compare liquid cooling with air cooling.
Explain the phenomena of knocking in an SI engine. What are the different factors which influence the knocking?
"Supercharging is preferred in diesel engine than petrol engine." -Justify this statement.
What are lean and rich mixtures? Describe briefly fuel/air ratio requirements in spark ignited petrol engines.
What do you mean by "Air Pollution" What are the main sources of pollutants from petrol engines?
What is scavenging? Why is scavenging important in two-stroke engines compared to four-stroke engines?
What do you mean by the term "Ignition" How is it related with "Combustion" What are the requirements of an ignition system for an I.C. engine?
What are the functions of the carburettor and fuel injection systems?
What is the importance of lubrication in I.C. engines?
An engine having compression ratio of6 is working on the Otto cycle. The compression ratio is increased from 6 to 7. Compare the change in efficiency due to this. Assume 1·4.
The four important temperatures in a diesel cycle are 30°C, 1500° 2850° C and 550° the last one being obtained at the end of compression. Calculate the air standard efficiency. Assume y =1·4.
Why is a cooling system necessary in an engine Compare liquid cooling with air cooling.
Explain the phenomena of knocking in an SI engine. What are the different factors which influence the knocking?
"Supercharging is preferred in diesel engine than petrol engine." -Justify this statement.
What are lean and rich mixtures? Describe briefly fuel/air ratio requirements in spark ignited petrol engines.
What do you mean by "Air Pollution" What are the main sources of pollutants from petrol engines?
What is scavenging? Why is scavenging important in two-stroke engines compared to four-stroke engines?
Other Question Papers
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Subjects
- Advanced Dynamics Of Machine
- Automobile Engineering
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- Computer Aided Manufacturing
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- Design of Machine Elements
- Engineering Metallurgy
- Engineering Thermodynamics
- Experimental Stress Analysis
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- Machine Design - I
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- Production Technology - Ii
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- Thermal Engineering - I
- Thermofluid Engineering
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- Tribology
- Turbo Machines
- Unconventional Manufacturing Processes
- Welding Engg.