Engine: Expired / General Subjects

1. A The sight glass must be drained, blown down, and re-filled before each reading is taken.
2. B The actual water level in the hydro pneumatic header tank is somewhat higher than the level shown in the sight glass.
3. C The actual water level in the hydro pneumatic header tank is somewhat lower than the level shown in the sight glass.
4. D The actual water level in the hydro pneumatic header tank is identical to the level shown in the sight glass.

Tip: press A-D to answer