Based on the Research of Newell and Associates (1989), More

question 38

Multiple Choice

Based on the research of Newell and associates (1989) , more than one thousand combinations of finger and thumb grips are possible, but adult subjects tend to use only about how many?

• A) 499
• B) 99
• C) 49
• D) 14

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Definitions:

Electromagnetic Induction

The process by which a voltage or electromotive force is generated in a conductor by varying the magnetic field around the conductor.

Commutator

A device used in electric motors and generators to periodically reverse current direction between the rotor and the external circuit.

Alternators

Machines that convert mechanical energy to electrical energy by producing alternating current, commonly used in cars to charge the battery and power the electrical system when the engine is running.

Revolving-field-type

The revolving-field-type refers to a design in electrical machines, particularly alternators, where the magnetic field rotates around a stationary armature, inducing an alternating current.