vilas,
my answer came in response to
scheini111 query which, as I interpreted it, was about what happens if any RAT SWs is pressed and I assumed he meant that the A/C has no fault prior to pressing the SWs.
1. If the RAT EMER GEN SW is pressed, RAT will drop and EMER GEN will activate and powers AC ESS until L/G is down then EMER GEN will deactivate.
2. If the HYD RAT SW is pressed, the RAT will extend and it will do nothing except rotating. It will not power the B HYD SYS because B sys is already powered by its own electrical pump. in this case, just assume the B ELEC pump PB is selected OFF then RAT will immediately power the B SYS.
Thanks