Q$5)(20$ marks $=8+12)$

a$)$ What are the characteristics of a battery that you have to consider before you choose one for following application? Justify. $(2$ marks each$)$

i$)$ Wearable device

ii$)$ Computation module for autonomous driving

iii$)$ Backup power for a single apartment house

iv$)$ Electric Vehicle

b$)$ What are the five layers at which power management is done for an embedded system? Briefly explain each layer and one example of how power can be reduced at that layer. $(12$ marks $-2$ marks for listing the layers, $2$ marks for each layer$)$