Engine : Steam Plants - 709/811
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| The purpose of the sentinel valve installed on a turbine casing is to __________. |
| A) vent excess steam to the main condenser |
| B) warn the engineer of excessive pressure in the low pressure turbine casing |
| C) relieve excess pressure to the turbine extraction points |
| D) warn the engineer of back flow of steam from the exhaust trunk |
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