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What basic information will you need to purchase a replacement relay?

Contacts have which of the following?

What is the common coil voltage for relays and contactors used in residential control applications?

How is a motor starter different from a contactor?

Match the term in Column 1 with the definition in Column 2:

Relays and contactors are used to

True or false: People in industrialized countries have more kids and people in poor countries have less kids.

___________ is the incidence of childbearing in a country’s population.

When middle-class people move into a rundown area of a city, displacing the poor as they buy and restore homes…..this is called _________.

True or false: The transformation of traditional societies into industrial societies is called modernization.