Power Engineering - 4B (Part 2) 1080 Study Questions with Complete 100% Verified Answer Latest Updated 2024/2025

Power Engineering - 4B (Part 2) 1080 Study Questions with Complete 100% Verified Answer Latest Updated 2024/2025 Activated carbon is produced from carbonaceous material such as: 1. coal 2. wood 3. magnesium 4. coconut shells 5. peat a. 1, 3, 4, 5 b. 1, 2, 4, 5 c. 1, 2, 3, 5 d. 2, 3, 4, 5 e. 1, 2, 3, 4 - Correct Answer b. 1, 2, 4, 5 Pitting of boiler metal may be prevented by a. agitating the feed water before it enters the boiler b. the addition of sodium sulphate to the feed water c. cooling the feed water to between 4C and 16C d. heating the boiler feed water to between 80C and 105C before it enters the boiler e. the addition of sodium chloride to the feed water - Correct Answer d. heating the boiler feed water to between 80C and 105C before it enters the boiler Bicarbonates can be easily removed from the feedwater by: a. blowing down the boiler b. using filter tanks c. heating the water just below its boiling point d. passing the water through a deaerator e. adding an additional screen - Correct Answer c. heating the water just below its boiling point The spray-type and tray-type are the two basic configur