As shown in the illustrated electrically...

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Question 1 of 205eccefa4bacbc34ba4d48503

As shown in the illustrated electrically operated watertight door controller, by what action are all the watertight doors automatically closed in an ordered sequence so as to not overload the emergency power supply? See illustration EL-0115.

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🔍 Key Concepts

• Review how the sequence timer motor and its cams are shown controlling multiple door motors in the diagram. • Notice what the Reset Close master switch does compared with the individual remote/local closing switches. • Think about the word automatically in the question versus actions that require the operator to work each door one at a time.

💭 Think About

• Which device in the circuit, when operated, will energize the timer motor so that its cams can close several doors one after another? • Do the individual door push buttons or local switches appear to control only a single door motor, or do they start the sequence timer for all doors? • If the goal is to avoid overloading emergency power, would it be better for a person to manually close each door in sequence, or for a timer-controlled circuit to do it?

✅ Before You Answer

• Verify which switch is wired in series with the timer motor and labeled on the diagram. • Confirm that the individual remote/local switches connect to only one door’s circuit, not all doors simultaneously. • Check that the option you choose clearly matches an automatic, timer‑controlled, sequential closing of all watertight doors.

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