a) For a DC power generation, explain how do you maintain terminal voltage. Formulate the required equation and hence state the principle behind the formulation of this equation. (Hint: You have learned in the electric circuit part of the course). (3 marks) b) In what terms do the capacity of an aircraft battery is measured? Convert it into SI unit and determine its relationship with current. (2 marks) c) Explain how a redundancy system works in a general aviation aircraft namely Cirrus SR-20. (2 marks) d) State which data busses (system components) will be powered on in case of i) ALT 2/ BAT 2 Failure ii) ALT 1/ BAT 1 Failure (3 marks)