The Condottieri Were

question 62

Multiple Choice

The condottieri were

• A)guides for long distance trade.
• B)early police units of the city-states.
• C)leaders of mercenary troops.
• D)textile merchants.
• E)military forces serving the papacy.

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Definitions:

Rotating Magnetic Field

The revolving magnetic field inside a polyphase motor.

Synchronous Speed

The speed at which the magnetic field in an AC machine rotates, determined by the frequency of the supply current and the number of poles in the machine.

Rotor Speed

The rotational speed of the rotor in a motor or generator, usually measured in revolutions per minute (RPM).

Stator Speed

The rotation speed of the stator, which is a stationary component of electromagnetic circuits in motors or generators.