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9.3 Classification of Asynchronous Machines
9.3 Classification of Asynchronous Machines
Apart from the various applications they have, we classify asynchronous machines according to the following features.
练习题
What is the primary basis for classifying asynchronous machines according to the textbook?
A. Their manufacturing cost and availability in the market
B. Their various applications in industry
C. Their specific features and characteristics
D. Their power rating and voltage level
Which statement correctly describes the relationship between applications and classification of asynchronous machines?
A. Applications are the primary factor in classifying asynchronous machines
B. Applications are considered alongside features when classifying machines
C. Applications are separate from the features used for classification
D. Applications determine the features used for classification
Which of the following statements about asynchronous (induction) machines are correct?
A. They are classified according to their specific features
B. They are also known as induction machines
C. They require an external excitation system like synchronous machines
D. Their classification is based on their various applications
The classification of asynchronous machines is primarily based on their various industrial applications.
Asynchronous machines and induction machines are two different types of electrical machines with different operating principles.
Unlike synchronous machines, asynchronous machines do not require an external excitation system.
Asynchronous machines are classified according to their ___ rather than their applications.
Explain why asynchronous machines are called 'induction machines' and how this relates to their excitation requirements.
Which characteristic distinguishes asynchronous machines from synchronous machines in terms of excitation?
A. Asynchronous machines require a DC excitation source
B. Asynchronous machines produce excitation current through electromagnetic induction
C. Synchronous machines do not require any excitation
D. Both machines use the same excitation method
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