Engine 2014: Steam Plants

1. A lower level than exists in the drum with the error becoming greater as the drum pressure decreases
2. B lower level than exists in the drum with the error becoming greater as the drum pressure increases
3. C higher level than exists in the drum with the error becoming greater as the drum pressure decreases
4. D higher level than exists in the drum with the error becoming greater as the drum pressure increases

Tip: press A-D to answer