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What is the temperature of Class B?

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in Design of Electrical Machines by (687k points)
What is the temperature of Class B?

(a) 120°C

(b) 130°C

(c) 155°C

(d) 180°C

This question was posed to me in an internship interview.

This interesting question is from Temperature Rise and Insulating Materials in portion Electrical Engineering Materials of Design of Electrical Machines

1 Answer

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The correct answer is (b) 130°C

For explanation: 120°C refers to the temperature of Class E. 155°C refers to the temperature of Class F. 180°C refers to the temperature of Class H.

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