Exam Details
| Subject | Applied Thermal Engineering | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages 3
DIPLOMA IN MECHANICAL ENGINEERING
Term-End Examjnation
December, 2016
UOU12
BME-053 APPLIED THERMAL ENGINEERING
Time hours Maximum Marks: 70
Note: Answer any five questions. Assume missing data suitably, if any. Use of scientific calculator is permitted.
1. Derive an expression for the thermal efficiency of the diesel cycle.
An engine working on Otto cycle has pressure 1 bar and temperature 30°C at the beginning of the compression stroke. At the end of the compression stroke, the pressure is 11 bar. The maximum temperature in the. cycle is lOOO°C. Determine the compression ratio,
work done/kg of air in the cycle, and efficiency. 7+7
2. Explain the Battery Ignition system with a neat sketch.
What are the types of Electronic Ignition systems? State their advantages. 7+7
3. Explain in brief the methods of cooling of IC Engines.
What do you mean by radiator Explain with a neat sketch. 7+7
4. Define Viscosity. How does the viscosity of liquids and gases change with increasing or decreasing of temperature?
Explain the working principle of Dry Sump Lubricating system with a neat sketch. 7+7
5. Explain any two of the following 2x3
Specific fuel consumption
Brake mean effective pressure
Specific power output
A diesel engine consumes fuel at the rate of 6 gm/s and develops power 80 kW. If the mechanical efficiency is determine BSFC and ISFC. The lower heating value of fuel is 44 MJ/kg.
6. What is intercooling Discuss the significance of intercooling in the reciprocating air compressors.
An air compressor has a volumetric efficiency of the discharge state being 550 kPa, 150°C and the inlet· state 100 kPa, 20°C. If the clearance is determine the polytrophic compression index, and volumetric efficiency. 7+7
7. What are the advantages of closed cycle gas turbine power plants over open cycle gas turbine power plants
State the major elements of gas turbine power plants and explain anyone of them. 7+7
8. Write short notes on any two of the following: 7+7
Octane Number
Producer Gas
Fuel-Air Ratio
DIPLOMA IN MECHANICAL ENGINEERING
Term-End Examjnation
December, 2016
UOU12
BME-053 APPLIED THERMAL ENGINEERING
Time hours Maximum Marks: 70
Note: Answer any five questions. Assume missing data suitably, if any. Use of scientific calculator is permitted.
1. Derive an expression for the thermal efficiency of the diesel cycle.
An engine working on Otto cycle has pressure 1 bar and temperature 30°C at the beginning of the compression stroke. At the end of the compression stroke, the pressure is 11 bar. The maximum temperature in the. cycle is lOOO°C. Determine the compression ratio,
work done/kg of air in the cycle, and efficiency. 7+7
2. Explain the Battery Ignition system with a neat sketch.
What are the types of Electronic Ignition systems? State their advantages. 7+7
3. Explain in brief the methods of cooling of IC Engines.
What do you mean by radiator Explain with a neat sketch. 7+7
4. Define Viscosity. How does the viscosity of liquids and gases change with increasing or decreasing of temperature?
Explain the working principle of Dry Sump Lubricating system with a neat sketch. 7+7
5. Explain any two of the following 2x3
Specific fuel consumption
Brake mean effective pressure
Specific power output
A diesel engine consumes fuel at the rate of 6 gm/s and develops power 80 kW. If the mechanical efficiency is determine BSFC and ISFC. The lower heating value of fuel is 44 MJ/kg.
6. What is intercooling Discuss the significance of intercooling in the reciprocating air compressors.
An air compressor has a volumetric efficiency of the discharge state being 550 kPa, 150°C and the inlet· state 100 kPa, 20°C. If the clearance is determine the polytrophic compression index, and volumetric efficiency. 7+7
7. What are the advantages of closed cycle gas turbine power plants over open cycle gas turbine power plants
State the major elements of gas turbine power plants and explain anyone of them. 7+7
8. Write short notes on any two of the following: 7+7
Octane Number
Producer Gas
Fuel-Air Ratio
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)
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- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
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Subjects
- Applied Thermal Engineering
- Automobile Engineering
- Basics of Thermal Energy
- CAD / CAM
- CNC Machanics
- Computer Integrated Manufacturing
- Engineering Materials
- Machine Design
- Manufacturing Processes-I
- Manufacturing Processes-II
- Manufacturing Processes-III
- Metrology and Instrumentation
- Power Plant Engineering
- Theory of Machine