Question 3 a) Using a simple diagram demonstrate voltage-current characteristics of a diode. Clearly present three main working areas of diode on the diagram. [10 Marks] b) Find the inductance, L, in Henries of the inductor of the Figure 4B, if the core is made of wood with relative permeability of = 16. = 0.075 m Wood core d = 0.005 m 200 turns Figure 4B [6 Marks] c) Briefly explain the working principle of Anti-Lock Braking. Use a simple diagram to demonstrate most important components of the system.