*sigh* I asked you to read everything again
In my CJ3 and in my Agusta A109E I have two generators with two separate generator control units mounted in different locations. I also have a separate battery back up unit running an attitude indicator.
Despite these, I always carry a battery operated Garmin 296 GPS – I have one in the glove box in each aircraft. This means that if everything else fails, I have navigation information and also quite acceptable attitude, climb and descent information as well as ground speed. The units operate from dry cells and will keep going for many hours.
But yes, CASA's english test will help clear up confusion on pprune when they enforce it on everyone.