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Engine : Motor Plants and Auxiliary Boilers - 1390/947
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Which of the following statements is true concerning the air starting valve, labeled "III", as shown in the illustration? Illustration MO-0046
A) During normal engine running, the air starting valve opens and closes constantly due to cam action.
B) The air starting valve is opened by cam action.
C) When starting air is secured, the air starting valve is closed.
D) When starting, the air starting valve is held open by air pressure.
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Illustration MO-0046

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