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a. A circuit breaker is ratedfor a current of 60 A rmsat a voltage of 90 V rms.W

ID: 1761438 • Letter: A

Question

a. A circuit breaker is ratedfor a current of 60 A rmsat a voltage of 90 V rms.What is the largest valueof Imax that the breaker can carry? Answer in units of A. b.What averagepower can be supplied by this circuit? Answer in units ofkW. a. A circuit breaker is ratedfor a current of 60 A rmsat a voltage of 90 V rms.What is the largest valueof Imax that the breaker can carry? Answer in units of A. b.What averagepower can be supplied by this circuit? Answer in units ofkW. b.What averagepower can be supplied by this circuit? Answer in units ofkW.

Explanation / Answer

I rms = 60 A we know I rms = I / 2 from this maximum current I = 2 * I rms                                            = 84.85 A Avrerage power = I rms * V rms                           = 60 A * 90 V                            =5400 W                            =5.4 kW