The arm in the relay is connected to what?

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Prepare for the Amtrak Signal Maintenance Training Level 1 exam. Study with multiple choice questions, each accompanied by hints and explanations. Equip yourself for success on your first attempt!

Multiple Choice

The arm in the relay is connected to what?

Explanation:
The moving arm works by swinging around a pivot, so it’s connected to a hinge. When the coil is energized, the magnetic field pulls the armature, and because the arm is mounted on a hinge, it can rotate to open or close the relay contacts. The coil provides the magnetic force, and the frame is the fixed support; neither is the connection that lets the arm move.

The moving arm works by swinging around a pivot, so it’s connected to a hinge. When the coil is energized, the magnetic field pulls the armature, and because the arm is mounted on a hinge, it can rotate to open or close the relay contacts. The coil provides the magnetic force, and the frame is the fixed support; neither is the connection that lets the arm move.

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