Diploma-Diploma Automobile Engineering 3rd Sem Automobile Electrical System(Gujarat Technological University-2013)
Friday, 30 August 2013 04:27anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGG.- SEMESTER–III EXAMINATION – WINTER 2012
Subject code: 330205 Date: 07/01/2013
Subject Name: Automobile Electrical System
Time: 2:30 pm – 5:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is Authentic
Q.1 (a) Describe the working principle of automobile battery. 07
(b) Draw and narrate any five components of automobile battery. 07
Q.2 (a) Explain the hydrometer test of the automobile battery. 07
(b) Explain the cadmium test of the automobile battery. 07
OR
(b) Explain HRD test of automobile battery. 07
Q.3 (a) What is the basic principle of the starter motor? 07
(b) What is drive mechanism? Explain any one drive mechanism. 07
OR
Q.3 (a) What is the purpose of the generator in an automobile?Explain it. 07
(b) Discuss in detail the construction of an ignition coil. 07
Q.4 (a) What is ignition advance? Explain centrifugal advance mechanism. 07
(b) Discuss in detail between battery ignition system and magneto
ignition system. 07
OR
Q. 4 (a) Explain the working principle of alternator. 07
(b) What is the difference between DC generator and alternator? 07
Q.5 (a) Draw the circuit diagram of starting circuit and charging circuit of
automobile. 07
(b) What is the aiming of head light? Explain in detail. 07
OR
Q.5 (a) Explain horn with neat sketch. 07
(b) Explain speedometer and odometer. 07
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