Question id 634 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

The low pressure spool runs at a very high RPM, thus preventing the onset of compressor stall.
Both spools run at the same RPM.
The low pressure spool runs at a lower RPM than the high pressure spool.
When operating at very high RPMs, the later stages within the high pressure spool will have a large negative angle of attack.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license