Consider the Class C amplifier operation employing transistor as a switch in saturated region of operation operating with conduction angle of 0. LIFE (a) HH exe Off #|0|0|1 On Off On (b) C 0000 R 2V de Vdc + av dc Vdc Vde- Figure: Class-C amplifier operation. dc MA 0c (C) 11 11 11 where the parameter a is a constant multiple of output sine wave. a) Find an expression for current, I through transistor switch when the transistor conducts. b) Find the average input power drawn by the transistor from the supply Vac- c) Find the average power dissipated by the load R, and in the transistor switch when it is ON. d) Find the efficiency of class C amplifier. How can you improve this efficiency?