Engine : Steam Plants - 480/811
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| Dirty generating tube surfaces may cause higher than normal superheater outlet temperatures because __________. |
| A) the boiler must be over fired to maintain the required rate of steam generation |
| B) the screen tubes absorb excessive heat and transfer the increased temperature to the superheater |
| C) the temperature of the gas leaving the generating banks will be lower than normal |
| D) gas laning will result causing overheating of the superheater |
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