Exam Details
| Subject | Propulsion- I | |
| Paper | ||
| Exam / Course | B.Tech in Aerospace Engineering (BTAE) | |
| 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 IBAS-OlSI
B.Tech. AEROSPACE ENGINEERING
(BTAE)
Term-End Examination
December, 2016
00483 BAS-013: PROPULSION
Time hours Maximum Marks: 70
Note: Attempt any five questions. Each question carries equal marks. Use of scientific calculator is permitted;·
1. Differentiate between Otto cycle and Diesel cycle. Show that thermal efficiency of an Otto cycle is given by
where rv compression ratio
Calculate the ideal air standard cycle efficiency based on the Otto cycle for a petrol engine with a Cylinder bore of 55 mm, a stroke of 75 mm and a clearance volume of 21.5 cm3.
2. Differentiate between turboprop and turbojet engines. Explain the working principle of a turboprop engine with the help of a neat sketch. Write the equation for thrust for a turboprop engine.
3. Distinguish between S.I. and C.I. engines. Explain the working of a four-stroke. C.I. engine with the help of p-v diagram and indicator diagram. 4+6
What is supercharging ?Explain its importance with respect to aircraft.
4. What are the various arrangements for multi-cylinder aircraft engines? Which type of arrangement is used currently for light aircraft and why? 4+4
Draw power available and power required diagram for a piston engined aircraft. How does altitude affect the performance of a piston engine aircraft? 3+3
5. Write notes on the following: 7+7
Splash and Dry Sump Lubrication System
Pressure Cooling and Steam Cooling
6. Explain the following terms and give their relevance: 7x2=14
Abnormal Combustion
Mean Effective Pressure
SHP
Specific Fuel Combustion
Emissive Power
Firing Order
Stoichiometric Mixture
7. What do you mean by carburetion? Explain the function of various elements of a carburettor system of a multi-cylinder piston engine with the help of a sketch. How· will you calculate fuel orifice size?
Distinguish between conduction and convection. Derive the general equation of 2-D heat conduction. 4+6
State and explain Planck's distributive law. 4·
B.Tech. AEROSPACE ENGINEERING
(BTAE)
Term-End Examination
December, 2016
00483 BAS-013: PROPULSION
Time hours Maximum Marks: 70
Note: Attempt any five questions. Each question carries equal marks. Use of scientific calculator is permitted;·
1. Differentiate between Otto cycle and Diesel cycle. Show that thermal efficiency of an Otto cycle is given by
where rv compression ratio
Calculate the ideal air standard cycle efficiency based on the Otto cycle for a petrol engine with a Cylinder bore of 55 mm, a stroke of 75 mm and a clearance volume of 21.5 cm3.
2. Differentiate between turboprop and turbojet engines. Explain the working principle of a turboprop engine with the help of a neat sketch. Write the equation for thrust for a turboprop engine.
3. Distinguish between S.I. and C.I. engines. Explain the working of a four-stroke. C.I. engine with the help of p-v diagram and indicator diagram. 4+6
What is supercharging ?Explain its importance with respect to aircraft.
4. What are the various arrangements for multi-cylinder aircraft engines? Which type of arrangement is used currently for light aircraft and why? 4+4
Draw power available and power required diagram for a piston engined aircraft. How does altitude affect the performance of a piston engine aircraft? 3+3
5. Write notes on the following: 7+7
Splash and Dry Sump Lubrication System
Pressure Cooling and Steam Cooling
6. Explain the following terms and give their relevance: 7x2=14
Abnormal Combustion
Mean Effective Pressure
SHP
Specific Fuel Combustion
Emissive Power
Firing Order
Stoichiometric Mixture
7. What do you mean by carburetion? Explain the function of various elements of a carburettor system of a multi-cylinder piston engine with the help of a sketch. How· will you calculate fuel orifice size?
Distinguish between conduction and convection. Derive the general equation of 2-D heat conduction. 4+6
State and explain Planck's distributive law. 4·
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Subjects
- Aerodynamics- I
- Aerodynamics- II
- Aircraft Design/Launch Vehicle/ Rocket Design
- Aircraft Instruments
- Aircraft Safety and Maintenance Engineering
- Aircraft Structures
- Aircraft Systems And Airworthiness Requirements
- Applied Chemistry
- Applied Physics
- Basic Control Theory
- CNS-ATM system
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- Instruction To Computer Play Device
- Introduction to Aeronautics
- Introduction To Rocket And Missiles
- Mechanics Design
- Propulsion- I
- Propulsion- II
- Rocket Propulsion
- Space Dynamics
- Strength of Materials
- Technical Writing and Communication Skills
- Workshop Technology