As shown in the illustration of an...

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Question 1 of 205eccefa4bacbc34ba4d48501

As shown in the illustration of an electrically operated watertight door controller, what type of motor is used to open and close the watertight door? Illustration EL-0115

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5eccefa4bacbc34ba4d48501

As shown in the illustration of an electrically operated watertight door controller, what type of motor is used to open and close the watertight door? Illustration EL-0115

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🔍 Key Concepts

• Review how series, shunt, and compound DC motor field windings are connected relative to the armature (in series with the load vs. across the supply). • Look closely at the door motor symbol and its connections in the EL-0115 diagram to see whether the field has separate leads or is built into the line with the armature. • Recall which DC motor type is commonly used where high starting torque is needed and speed can vary with load, such as in winches, hoists, or door actuators.

💭 Think About

• From the schematic, count how many external connections go to the door motor and how they are arranged. Does the field winding appear to be in series with the armature, in parallel, or a combination? • Think about the operating requirements of a watertight door: does it need strong starting torque, precise constant speed, or a mix of both? Which DC motor type best fits that duty? • Compare each option with what the drawing actually shows for the motor terminals and field winding — which choice matches that wiring arrangement?

✅ Before You Answer

• Verify whether the field winding is drawn in series with the armature or in parallel (shunt) with it in the diagram. • Confirm how many motor terminals are shown; more than two often indicates separate field and armature connections used for shunt or compound motors. • Make sure the selected motor type’s torque and speed characteristics match the needs of a watertight door (reliable starting under load, controlled motion).

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Question 1 of 205eccefa4bacbc34ba4d48501

As shown in the illustration of an electrically operated watertight door controller, what type of motor is used to open and close the watertight door? Illustration EL-0115

Back

Question 1 of 20

5eccefa4bacbc34ba4d48501

As shown in the illustration of an electrically operated watertight door controller, what type of motor is used to open and close the watertight door? Illustration EL-0115

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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