Q. In case of oil fired boiler, the excess air is usually (Solved)
1. 1 to 2 percent
2. 5 to 12 percent
3. 20 to 25 percent
4. 75 to 125 percent
5. None of the above
- b. 5 to 12 percent
1. 1 to 2 percent
2. 5 to 12 percent
3. 20 to 25 percent
4. 75 to 125 percent
5. None of the above