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Emc 0108 Autoelectronics 1 Question Paper

Emc 0108 Autoelectronics 1

Course:Certificate In Automotive Engineering

Institution: Meru University Of Science And Technology question papers

Exam Year:2012

QUESTION ONE – (30 MARKS)
(a) State the Ohm’s Law. (2 Marks) (b) State four applications of diodes in electronics. (4 Marks) (c) Name three types of electrical circuits. (3 Marks) (d) List five components that make up electrical circuits. (5 Marks) (e) State three causes of car battery failure (3 Marks) (f) Using a sketch explain the generator rule. (4 Marks) (g) State two applications of transistors in electronic circuits. (2 Marks) (h) State two advantages of fuel injection over carburetors. (2 Marks) (i) State three disadvantages of conventional coil ignition. (4 Marks) (j) State two types of motors used in starting systems. (2 Marks)
QUESTION TWO – (15 MARKS)
(a) Using a diagram describe how starter switching circuit works. (6 Marks) (b) Name two sensors used in electronic fuel injection and explain their function. (4 Marks) (c) Define the term ‘excitation’ in relation to alternators. (2 Marks) (d) Using a diagram briefly describe a full wave rectifier. (3 Marks)
QUESTION THREE – (15 MARKS)
(a) Using a diagram describe the operation of a D jectronic electronic fuel injection system. (7 Marks) (b) Using a circuit diagram describe the operation of a battery excited alternator. (5 marks)
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QUESTION FOUR – (15 MARKS)
(a) Using a circuit diagram describe operation of conventional coil ignition system. (6 Marks) (b) State three factors that determine the amount of voltage produced by a generator. (3 Marks) (c) Using a circuit diagram describe the operation of a self excited alternator. (6 Marks)

Emc 0108 Autoelectronics 1 Question Paper

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