1. (a)What is an automatic gearbox
(b)Mention the lubricant used in automatic gearbox (ATF)
(c)Differentiate between the Manual gearbox and semi automatic gearbox
(d)Briefly explain the main purpose of transfer gearbox in the transmission system
2. (a)What is torque conveter in automatic transmission of modern vehicle
(b).Epicyclic gears and special set of gear are part of most automatic gearbox name three (3) of them
(c).With aid of adiagram explain how the torque conveter works in the automatic gearbox
3. (a)List three (3) system that are designed to increase branking ability of the vehicle
(b).What is the function of brake booster on the brake system
(c).Explain the three (3) basic part of drum brake assembly
(d).Draw the tandem brake master cylinder indicating its main parts
4.(a)Mention four (4) main parts of disc brakes
(b).Describe the procedures used to remove bubbles in hydraulic brake system
(c).Briefly explain what will happen if the brakes of one side of the vehicle are free.
(d).Distinguish between heading shoe and traiting shoe of the brake.
5. (a)What is the function of sensor in the moder vehicles?
(b).Sensor can be grouped into two (2) main classes name them.
(c).With the help of agood and dearblock diargram show simple electronic contral unit with sensor and actuators
(d).Briefly explain about actuators as a component used in modern vehicles
6. (a)Define the term "stoke"
(b)Differentiate between spark ignition (si) and compression ignition
(c).Identify three (3) types of engine cylinders arrangements
(d).The engine drives comshaft in three ways ,name them
7. (a).Differentiate between valve timing and ignition timing or internal combustion engine
(b).What are the possible causes of engine troubles when the following symtoms are observed.
i/.Engine does not rotate when trying to rotate
ii/.Engine rotates but does not start
iii/Difficult to start when cold
iv/.Lack of power
v/.Back fires
(c).State five (5) main component inthe electronic fuel injection system (petrol engine)
(d).Mention two (2) types of petrol fuel pump and where they are mounted
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