Which of the Following Is Not True of Permanent-Magnet Motors

question 4

Multiple Choice

Which of the following is not true of permanent-magnet motors?

• A) The main field flux is produced by permanent magnets.
• B) An electromagnet is used for the secondary field or armature flux.
• C) They has many of the characteristics of a wound rotor induction motor.
• D) They consist of permanent magnets mounted on a frame with a rotating armature placed between them.

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Definitions:

Government Intervention

Actions taken by a government to affect the economy, which can include regulations, subsidies, tariffs, and fiscal or monetary policies.

Deadweight Loss

The reduction in economic productivity that happens when a good or service does not reach or cannot reach its equilibrium state.

Natural Monopoly

A market condition where a single firm can provide a good or service at a lower cost than any competitors, due to economies of scale.

Public Ownership

Public ownership denotes ownership by the government or a public entity, often applied to assets, utilities, or enterprises meant for public benefit.