199. The vessel to which you are assigned has main diesel engines fitted with intake and exhaust systems as shown in the illustration. Under what circumstances would the check valve open and bypass the rotary-lobe roots blower

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the check valve opens when the engine is running under a relatively heavy load and the rotary-lobe roots blower discharge pressure is negative.

199. The vessel to which you are assigned has main diesel engines fitted with intake and exhaust systems as shown in the illustration. Under what circumstances would the check valve open and bypass the rotary-lobe roots blower

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