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B.E/B.TECH. DEGREE EXAMINATION, MAY/JUNE 2013
Anna University, Chennai
Fifth Semester
Automobile Engineering
080190015-AUTOMOTIVE ELECTRICAL AND ELECTRONIC SYSTEMS
(Regulation 2008)
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PART A-(10*2=20 marks)
1. Give the effect of overcharging and under charging of battery.
2. Why are battery cells connected in series?
3. State the effect of loose and tight generator belt.
4. State four advantages of an alternator over d.c. generator.
5. State the function of fuse.
6. What do you mean by headlight dazzling?
7. What do you mean by active and passive sensor?
8. Briefly explain the principle of coolant temperature sensor.
9. Is ECU can be inter changed between two engines? Justify.
10. What do you mean by wiring harness?
PART B-(5*16=80 Marks)
11. (a) (i) Explain with the aid of neat sketch, the principle, construction and working principle
Of lead acid battery.
(ii) Discuss any three problem caused in a battery along with possible cause and
remedial measures.
Or
(b) (i) Explain with the aid of neat sketch, the principle, construction and working principle
of Alkaline battery.
12. (a) (i) Explain the circuit diagram of charging system using D.C generator and functions of each
component.
(ii) Explain the construction and working of Bendix drive.
Or
(b) (i) Explain the construction and working of Cut-out relay.
13. (a) Explain the working of electric horn, wirer system and Trafficator.
Or
(b) Explain Multiplexing and Demultiplexing with an application in automobile.
14. (a) Explain the working of Oxygen sensor, hot wire mass air flow sensor with simple sketch.
Or
(b) Discuss the various actuators with necessary sketch and its application in automobile.
15. (a) (i) With the aid of block diagram, explain the various components of Electronic Engine
Control Module.
(ii) With the aid of block diagram, explain the various components of Electronic
Powertrain Control Module.
Or
(b) Write short notes on the following
(i) PID control
(ii) Formulation of Engine map
(iii) Onboard diagnostics system.
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