Question 6
(a) The fuel guage unit is important to the operation of a motor vehicle
(i) List three parts of the unit
(ii) State three common faults associated with the unit
(b) List five units of the auxiliary system apart from the fuel gauge unit
(c) Sketch the symbol of the following warning signs:
(i) low oil pressure;
(ii) faulty charging system
Observation
The expected responses were:
- (i) Parts of the fuel gauge unit
- Sender unit
- Warning lamp
- Variable resistor
- Float
- Indicator lamp
- Fuel level indicator
(ii) Common faults associated with the unit
- Open circuit
- Short circuit
- Punctured float
- Blown fuse
- Loose connection
- Units of the auxiliary system apart from the fuel gauge unit
- Horn
- Wiper/wind screen wiper
- Windscreen washer
- Oil pressure gauge
- Temperature gauge/water temperature gauge
- Door switch
- Indicator
- (i) Sketch of the symbol of low oil pressure waning sign
(ii) Sketch of the symbol of faulty charging system waning sign
