The Maximum Cardinality of Any REA Diagram Relationship Is

question 27

Multiple Choice

The maximum cardinality of any REA diagram relationship is

• A) zero or one.
• B) one or many.
• C) zero or many.
• D) none of the above

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Definitions:

Control Contacts

Control contacts are the parts of a relay or switch that make or break the connection in a control circuit, influencing the operation of a system or device.

Hand-off-automatic Circuit

A control circuit configuration that allows a device or system to be operated manually or automatically, based on the position of a selector switch.

Pilot Control Device

A mechanism or component used to regulate the operation of machinery or systems through the control of smaller power inputs.

Loss of Power

A situation where electrical power is interrupted or unavailable to a device or area.