Engine_2014 : Steam Plants - 618/1951
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| One function of the air and flue gas bypass dampers installed in regenerative type air heaters is to __________ . |
| A) avoid excessive cooling of the stack gases during low load operation |
| B) regulate combustion air temperature at normal firing rates |
| C) reduce the load on the element drive motor |
| D) reduce the temperature of the double undulated heating elements |
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