Looking for AT2032 Engine Auxiliary Systems important questions for Nov Dec 2015 exams ? You can easily download here all important questions of Engine Auxiliary Systems as text version. This is a subject in 7th Semester B.E Automobile Engineering Anna University R-2008.
Anna University Chennai
Department of B.E Automobile Engineering
Seventh Semester
AT2032 Engine Auxiliary Systems
November / December 2015 Exam Important Questions
(Regulation 2008)
IUQP Important Questions
Anna University, Chennai
Department of B.E- Automobile Engineering
B.E / B.TECH DEGREE EXAMINATION Nov/ Dec 2015
SEVENTH SEMESTER
AT2032 Engine Auxiliary Systems
(REGULATION 2008)
1. Explain the working principle of Constant vacuum type carburetor
2. A simple jet carburetor is required to supply 4.6 Kg of air per minute. The pressure and temperature of air are 1.013 bar and 25°C respectively. Assuming flow to be isentropic and compressible and velocity co-efficient as 0.8. Calculate the throat diameter of the choke for air flow velocity of 80 m/s
3. A simple carburetor is designed to supply 6 kg of air per minute and 0.4 kg of fuel per minute. The
density of the fuel is 770 kg/m^3. The air is initially at 1 bar and 17 C. Calculate the venturi-throat
diameter if the velocity of air at throat is 100 m/s. Assume Cda=0.84. Cdf=0.65 and y=1.4. If the pressure drop across the fuel metering orifice is 0.85 of the pressure at the throat.
4. A simple carburetor is designed to supply 5.8 kg of air per minute and 0.6 kg of fuel per minute.
Specific gravity of fuel is 0.78. The air is initially at 1.013 bar and 18 C. Calculate the venturi throat
diameter if the velocity of air at throat is 120 m/s. Assume Cda=0.84. Cdf=0.60 and y=1.4. If the
pressure drop across the fuel metering orifice is 0.80 of the pressure at the throat.
5. With the aid of a circuit diagram explain the working principles of a battery coil ignition system
6. Draw the diagram for an ignition coil and name the components
7. Describe the necessity of the spark advance mechanism in an engine
8. With the aid of a diagram describe vacuum spark advance mechanism
9. Explain the working of Unit injector?
10. Explain the working principle of Jerk type pump?
11. What is the purpose of governor in Diesel engines? Explain the principle and working of pneumatic governor with a neat sketch.
12. Explain various types of combustion chambers used in CI engines with sketches. Also write the
merits and demerits.
13. Explain the working principle of intake manifold and its components?
14. Explain the working principle of types of mufflers?
15. Explain the working principle of exhaust manifold expansion cooing system?
16. Explain the working principle of types of exhaust manifold component system?
17. Explain the working principle of forced circulation type cooing system?
18. Briefly explain with neat sketch about the pressurized lubrication system?
19. Explain the following:
i. Thermosyphon cooling system
ii. Forced circulation cooling system
iii. Evaporative cooling system
iv. Pressure cooling system
20. What are the requirements of lubrication system? Also discuss various properties of lubricants
Anna University Chennai
Department of B.E Automobile Engineering
Seventh Semester
AT2032 Engine Auxiliary Systems
November / December 2015 Exam Important Questions
(Regulation 2008)
IUQP Important Questions
Anna University, Chennai
Department of B.E- Automobile Engineering
B.E / B.TECH DEGREE EXAMINATION Nov/ Dec 2015
SEVENTH SEMESTER
AT2032 Engine Auxiliary Systems
(REGULATION 2008)
1. Explain the working principle of Constant vacuum type carburetor
2. A simple jet carburetor is required to supply 4.6 Kg of air per minute. The pressure and temperature of air are 1.013 bar and 25°C respectively. Assuming flow to be isentropic and compressible and velocity co-efficient as 0.8. Calculate the throat diameter of the choke for air flow velocity of 80 m/s
3. A simple carburetor is designed to supply 6 kg of air per minute and 0.4 kg of fuel per minute. The
density of the fuel is 770 kg/m^3. The air is initially at 1 bar and 17 C. Calculate the venturi-throat
diameter if the velocity of air at throat is 100 m/s. Assume Cda=0.84. Cdf=0.65 and y=1.4. If the pressure drop across the fuel metering orifice is 0.85 of the pressure at the throat.
4. A simple carburetor is designed to supply 5.8 kg of air per minute and 0.6 kg of fuel per minute.
Specific gravity of fuel is 0.78. The air is initially at 1.013 bar and 18 C. Calculate the venturi throat
diameter if the velocity of air at throat is 120 m/s. Assume Cda=0.84. Cdf=0.60 and y=1.4. If the
pressure drop across the fuel metering orifice is 0.80 of the pressure at the throat.
5. With the aid of a circuit diagram explain the working principles of a battery coil ignition system
6. Draw the diagram for an ignition coil and name the components
7. Describe the necessity of the spark advance mechanism in an engine
8. With the aid of a diagram describe vacuum spark advance mechanism
9. Explain the working of Unit injector?
10. Explain the working principle of Jerk type pump?
11. What is the purpose of governor in Diesel engines? Explain the principle and working of pneumatic governor with a neat sketch.
12. Explain various types of combustion chambers used in CI engines with sketches. Also write the
merits and demerits.
13. Explain the working principle of intake manifold and its components?
14. Explain the working principle of types of mufflers?
15. Explain the working principle of exhaust manifold expansion cooing system?
16. Explain the working principle of types of exhaust manifold component system?
17. Explain the working principle of forced circulation type cooing system?
18. Briefly explain with neat sketch about the pressurized lubrication system?
19. Explain the following:
i. Thermosyphon cooling system
ii. Forced circulation cooling system
iii. Evaporative cooling system
iv. Pressure cooling system
20. What are the requirements of lubrication system? Also discuss various properties of lubricants
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