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Difficulty: EasySwitches and Relays

An electromechanical relay provides electrical isolation between the control circuit powering its coil and the separate circuit switched by its contacts.

Answer: Answer

Answer

True
Electromechanical relays operate by using a magnetic field from a coil to mechanically open or close contacts, providing complete electrical isolation between the low-power control circuit and the switched load circuit.

Step-by-Step Solution

1
Identify the operating mechanism of an electromechanical relay.
Current through the relay coil generates a magnetic field that physically attracts an armature to open or close contacts.
Understanding the physical separation between the electromagnetic coil and the contact terminals determines whether an electrical connection exists between them.
2
Evaluate the electrical connectivity between the coil circuit and the switched load circuit.
The two circuits are linked magnetically and mechanically, not electrically.
Because there is no conductive path between the coil terminals and the contact terminals, the relay provides complete electrical isolation.

Key Concept

Electrical isolation in electromechanical relays
Estimated Time:30s
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Topics

Switches and Relays

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