A Technician Needs to Check a Single-Phase Compressor

question 13

Multiple Choice

A technician needs to check a single-phase compressor. He labels the three terminals "A," "B," and "C" and takes resistance readings of the windings. He reads 10 ohms from "A" to "B," infinity from "B" to "C," and infinity from "C" to "A." Identify the terminals.

• A) A: common B: start C: run
• B) Cannot identify terminals: winding grounded
• C) A: start B: run C: common
• D) Cannot identify terminals: open winding

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Definitions:

Entity

Something that exists independently with a distinctive identity, especially in the context of databases where it refers to an object about which data can be stored.

Cardinality

In database design, it refers to the uniqueness of data values contained in a column; in relationships, it describes the attributes of the relationship between tables.

Entity

An entity can refer to any individual, company, organization, or system that exists as a singular, identifiable unit.

Ternary Relationship

A type of association in database modeling where three entities participate together in a relationship.