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Engine : Steam Plants - 442/811
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When excessive static boiler pressure has resulted in the initial lift of the valve disc, a huddling chamber safety valve will continue to lift open as a result of ___________,
A) steam pressure acting on the enlarged area of projecting lip or ring
B) the resulting reactive force created by the rapid expansion of escaping steam
C) an increase in steam velocity through an adjustable orifice ring
D) steam pressure transmitted through a pipe connected to the superheater outlet
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