This Disease Is Caused by Deterioration of the Myelin Sheath

question 9

Multiple Choice

This disease is caused by deterioration of the myelin sheath covering the axons within the brain.

• A)Parkinson disease
• B)multiple sclerosis
• C)Alzheimer disease
• D)Ménière disease

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Definitions:

Starting Torque

The torque an electric motor generates to start a load moving.

Selsyn Motors

Special motors that can be employed to provide angular feedback information or control the rotation of devices at a distance.

Voltage

The measure of electrical potential difference between two points in a circuit, driving current from places of high potential to low potential.

Synchronous Motor

An AC motor that operates at a speed synchronized with the frequency of the supply current; its rotor speed matches the frequency of the stator's rotating magnetic field.