After Testing and Refining Ideas,scientists Often Develop a Model That

question 30

Multiple Choice

After testing and refining ideas,scientists often develop a model that explains why things behave as they do and predicts what will happen in the future.This type of model is BEST referred to as a:

• A) theory.
• B) scientific law.
• C) hypothesis.
• D) postulate.

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Definitions:

Rotor Bars

Metal bars placed in the rotor of an induction motor that conduct current and interact with the magnetic field to create rotation.

Power Factor

A measure of how effectively electrical power is converted into useful work output, with a range from 0 to 1.

Reactance

The opposition that inductors and capacitors present to the flow of alternating current, characterized by its effect on the phase of the current.

Resistance

A material's opposition to the flow of electric current, measured in ohms.