Question 2
- (a)The sketch in Figure 2 represents a component of the water cooling system in an automobile.
(i) Identify the component.
(ii) Name the parts labelled M, N, P, and Q.
(b i) State the function of the cooling system.
(ii) Name the two types of cooling system.
(c i) Sketch the leading and trailing shoe arrangement of a hydraulic brake
system and label three of its parts.
(ii) State the function of the brake system.
Observation
Few Candidates who sat the examination did not attempt this question peradventure because there is another one to choose. Below are the expected responses to the question.
(a) (i) The component is a RADIATOR
(ii) Naming of labelled parts
M - Pressure cap or filler cap
N - Top tank
P - Radiator tube, Matrix or Core
Q - Bottom or Lower tank
(b) (i) Function of the cooling system
- To maintain the engine temperature within safe limits.
- To remove excess heat from the engine.
- It raises the engine temperature to its operational level as fast as possible.
- It provides heat to the passenger/ driver’s compartment.
(ii) Types of cooling media
- Air
- Water
(c) (i) Sketch of the hydraulic leading and trailing shoe arrangement
(ii) Function of the brake system
- It is used to slow down or stop motion of the vehicle in either direction by converting mechanical energy to heat energy through friction, no matter the speed of the vehicle.
- It prevents the vehicle from rolling when it is parked without the driver inside