Engine_2014 : Motor Plants and Auxiliary Boilers - 1709/2614
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| A photoelectric cell installed in an automatically fired auxiliary boiler burner management system __________ . |
| A) opens the burner circuit upon sensing a flame failure |
| B) detects a flame failure by monitoring radiant heat from glowing refractory |
| C) requires mechanical linkage to secure the burner fuel supply |
| D) must be bypassed at low firing rates |
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