Question 2
(a)
(i) Draw a coaxial starter motor circuit.
(ii) Label any four parts of the circuit drawn in 2(a)(i).
(b)List any two types of switch employed in a starter motor.
(c)Why is it necessary to use a short cable to supply current to a starter motor?
Observation
- Coaxial starter motor circuit
- (b)Types of switch employed in a starter motor
- Magnetic switch
- Manual/Mechanical switch
- Pneumatic switch
- Hydraulic switch
- (c)Why it is necessary to use short cables to supply current to a starter motor
- The longer the cable, the more the voltage drop/power loss (to reduce the voltage drop)
- To reduce the resistance towards the flow of current.
A few of the candidates were able to express the diagram of a coaxial starter motor and important parts like the contacts were well indicated.