Engine: Retired questions · Refrigeration AC

1. A The more the exhaust and recirculation dampers are open, the more the outside air damper is closed, and vice versa.
2. B The more the outside air and recirculation dampers are open, the more the exhaust damper is closed, and vice versa.
3. C The more the exhaust and outside air dampers are open, the more the recirculation damper is closed, and vice versa.
4. D The the exhaust, outside air, and recirculation dampers are all open or closed to the same degree for all operating conditions.

Tip: press A-D to answer