BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
QUESTION BANK
Department: AERONAUTICAL ENGINEERING
Program Name/Code: B TECH/ AERONAUTICAL ENGINEERING
Course Name/Code: INTRODUCTION TO COMBUSTION / U18PEAE041
Q.No
Question
Weightage
CO
Bloom’s
Level
2
2
2
2
2
2
2
2
2
2
CO1
CO1
CO1
CO1
CO1
CO1
CO1
CO1
CO1
CO1
1
2
1
2
2
2
1
2
1
2
UNIT I
PART – A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Define Flame.
Define the term Stoichiometric ratio.
Define Thermo-Chemical Reaction
Define Detonation
Differentiate Rich and Lean mixture
Define Heat of Reaction.
Define Deflagration.
Define Equivalence ratio.
Define calorific value of a fuel
Define Equivalence ratio.
Part – B
1.
Explain the radiation by flames.
6
CO1
1
2.
Differentiate stabilized and Propagating flame.
6
CO1
2
3.
Write the balanced equation for gasoline.
6
CO1
2
6
CO1
2
6
CO1
2
4.
5.
Define calorific value of a fuel and detail its importance on
combustion.
Identify the gram of air is required to burn a one mole of petrol in
stoichiometric ratio
6.
Differentiate endothermic and exothermic reactions.
6
CO1
2
7.
Identify the gram of air is required to burn a one mole of petrol in
stoichiometric ratio
6
CO1
2
8.
Discuss about complete combustion with suitable example.
6
CO1
2
9.
Discuss about incomplete combustion with suitable example.
6
CO1
2
10.
Discuss about flameless combustion
6
CO1
2
Part – C
1.
Explain with a diagram the Rankine-Hugoniot curves.
10
CO1
2
2.
Discuss the effect of various parameters on burning velocity.
10
CO1
1
10
CO1
2
10
CO1
2
3.
4.
Explain methods of measuring the burning velocity and detail any two
with diagram.
The Combustion of gasoline take place. The obtained product as
10.02% of CO2, 0.88 % of CO, 83.48% of N2. Determine Equivalence
air to fuel ratio and Percentage of excess air.
5.
List and explain in detail the type of air fuel mixtures.
10
CO1
2
6.
Draw the tree diagram for different types of flames
10
CO1
1
Bharath Institute of Higher Education and Research (BIHER)
IQAC/ACAD/008
BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
7.
Discuss in detail about the application of Thermo-Chemical reaction.
Bharath Institute of Higher Education and Research (BIHER)
10
CO1
2
IQAC/ACAD/008
BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
Q.No
Question
Weightage
CO
Bloom’s
Level
UNIT II
PART – A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Name the working cycle of an IC engine.
Define Reaction rate.
Define octane rating.
Define compression ratio.
Define volatility.
Differentiate TDC and BDC.
Define cetane number.
Define preignition
Define efficiency of an engine.
Define detonation.
2
2
2
2
2
2
2
2
2
2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
1
2
1
1
1
2
1
1
1
1
1.
Part – B
Discuss the classification of piston engines.
6
CO2
1
2.
Differentiate CI and SI Engines.
6
CO2
2
3.
Define turbulence and how it affects the performance of the IC
engine.
6
CO2
1
4.
Explain abnormal combustion and list two control methods
6
CO2
2
5.
Explain why spark plug is not installed in a diesel engine
6
CO2
2
6.
Discuss about homogenous combustion with suitable example.
6
CO2
2
7.
Discuss about heterogenous combustion with suitable example.
6
CO2
2
8.
Explain the concept of crankcase dilution.
6
CO2
2
9.
Discuss about the fuel used in aviation sector.
6
CO2
2
10.
Explain about the reaction rate and transposition rate.
6
CO2
2
Part – C
1.
Explain in detail the various factors affecting the combustion
efficiency in a Piston engine.
10
CO2
2
2.
Define detonation and explain the factors affecting the detonation.
10
CO2
1
3.
List the criteria for selecting the fuel in a piston engine.
10
CO2
2
4.
Explain with a neat sketch the combustion process in SI engine.
10
CO2
2
5.
Explain with a neat sketch the construction and working of an IC
engine
10
CO2
2
6.
Explain with a neat sketch the combustion process in CI engine.
10
CO2
2
7.
Discuss the various methods to prevent detonation.
10
CO2
2
Bharath Institute of Higher Education and Research (BIHER)
IQAC/ACAD/008
BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
Q.No
Question
Weightage
CO
Bloom’s
Level
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
2
2
2
2
2
2
2
2
2
2
CO3
CO3
CO3
CO3
CO3
CO3
CO3
CO3
CO3
CO3
1
2
1
1
2
1
2
1
2
1
1.
UNIT III
PART – A
Define air-fuel ratio and give the value for Gas turbine engine.
Differentiate Air-fuel and stoichiometric ratio
Define combustion intensity.
Define stoichiometric ratio and give the value for Gas turbine engine.
Differentiate gas turbine and ramjet engines.
Define stagnation condition.
Define Dilution in combustion.
Define rapid combustion.
List four performance parameter in a combustion process.
Define recirculation.
Part – B
Describe the characteristics of the fuel used in Gas turbine engine.
6
CO3
2
2.
Discuss how recirculating flow pattern is achieved.
6
CO3
2
3.
Define turbulence and how it affects the performance of the Gas
turbine engine.
6
CO3
1
4.
Discuss the factors influencing design of the Gas turbine combustor.
6
CO3
2
5.
Discuss the losses in the GT combustors.
6
CO3
2
6.
Explain the concept of Coking.
6
CO3
1
7.
List the types of flame holders and describe any two.
6
CO3
2
8.
Explain the importance of combustion intensity.
6
CO3
1
9.
Explain in detail about the purpose of swirler in a GT engine.
6
CO3
1
10.
Discuss the concept of stability loop.
6
CO3
1
Part – C
1.
Explain the combustion process of a Gas Turbine Engine with a
sketch.
10
CO3
2
2.
Explain the various type of combustor of GT engine with a diagram.
10
CO3
2
3.
Explain the combustion process of a ramjet engine with sketch.
10
CO3
2
4.
Explain the process and importance of flame stabilization.
10
CO3
2
5.
Explain the factors affecting the combustion efficiency of GT engine.
Explain the factors affecting the combustion efficiency of ramjet
engine
Explain in detail about the pollutants in combustion process.
10
CO3
2
10
CO3
2
10
CO3
2
6.
7.
Bharath Institute of Higher Education and Research (BIHER)
IQAC/ACAD/008
BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
Weightage
CO
Bloom’s
Level
2
2
2
2
2
2
2
2
2
2
CO4
CO4
CO4
CO4
CO4
CO4
CO4
CO4
CO4
CO4
1
1
1
1
1
1
1
1
1
1
1.
Define Convection.
Define detonation.
Define shock wave.
List the types of shock waves formed in a scramjet engine.
Define stagnation condition.
Differentiate supersonic and subsonic flame holders.
List few applications where scramjet is used.
List the components of scramjet engine.
Define airbreathing engine
List the need for hypersonic combustion.
Part – B
Explain the types of flow with reference to Mach number.
6
CO4
2
2.
Explain the components of scramjet engine with a neat sketch.
6
CO4
2
3.
Explain subsonic combustion.
6
CO4
2
4.
Discuss the factors that affects the supersonic combustion.
6
CO4
2
5.
Describe the process of supersonic combustion.
6
CO4
1
6.
Discuss about the concept of external combustion
6
CO4
2
7.
Explain about the purpose of isolator in scramjet engine
6
CO4
2
8.
Discuss about the concept of mixed combustion
6
CO4
2
9.
Explain about the nozzle used in scramjet engine.
6
CO4
2
10.
Discuss about the concept of internal combustion
6
CO4
2
10
CO4
2
10
CO4
2
Q.No
Question
UNIT IV
PART – A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Part – C
2.
Explain the combustion process of a scramjet engine with a neat
sketch.
List and discuss the types of compression in a scramjet engine.
3.
Discuss the nozzle construction of a scramjet engine.
10
CO4
2
4.
List and discuss the types of mixing in a scramjet engine.
10
CO4
2
5.
Discuss the factors affecting the efficiency of the scramjet engine.
Explain with the neat sketch construction and working of a scramjet
engine.
Explain in detail about the air-fuel mixing in scramjet engine.
10
CO4
1
10
CO4
2
10
CO4
2
1.
6.
7.
Bharath Institute of Higher Education and Research (BIHER)
IQAC/ACAD/008
BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGY
Department of Aeronautical Engineering
Q.No
Question
Weightage
CO
Bloom’s
Level
2
2
2
2
2
2
2
2
2
2
CO5
CO5
CO5
CO5
CO5
CO5
CO5
CO5
CO5
CO5
1
1
2
1
1
1
2
1
1
1
6
CO5
2
UNIT IV
PART – A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
1.
Define non airbreathing engine
Define specific impulse.
Write the thrust equation of a rocket propulsion.
List the parameters of the performance of rocket propulsion.
Define oxidizer.
Define Internal energy
Define total impulse.
Define thrust coefficient.
Define the law that governs rocket propulsion.
Define characteristic velocity
Part – B
Describe the primary propulsion and auxiliary propulsion.
2.
Describe the types of fuel in rocket propulsion and give examples for
each.
6
CO5
2
3.
Explain the electro thermal rocket propulsion with a sketch.
6
CO5
2
4.
Differentiate the pump fed and pressure fed system in rocket
propulsion.
6
CO5
2
5.
Explain the working of isolation valve.
6
CO5
2
6.
Discuss the concept of auxiliary propulsion with a sketch.
6
CO5
2
7.
Discuss the need for thermal insulation in a rocket system
6
CO5
2
8.
Explain the three stages of an ignition system.
6
CO5
2
9.
Explain the role of a binder and discuss any two in detail.
6
CO5
2
10.
Explain the parameters affecting the thrust.
6
CO5
2
Part – C
1.
2.
Explain in detail with a sketch about ionic propulsion system
Explain the mono-propellant propulsion system with neat sketch.
10
10
CO5
CO5
2
2
3.
10
CO5
2
10
CO5
2
5.
Explain the working of rocket propulsion system with neat sketch.
Explain the factors affecting performance parameters of the rocket
propulsion.
Explain the bi-propellant propulsion system with neat sketch.
10
CO5
2
6.
Explain in detail about the hybrid rocket system.
10
CO5
2
7.
Explain in detail with a sketch about electric propulsion system
10
CO5
2
4.
Bharath Institute of Higher Education and Research (BIHER)
IQAC/ACAD/008