An air conditioner connected to a 120 V rms ac line is equivalent to a 13.7 ? re
ID: 2241332 • Letter: A
Question
An air conditioner connected to a 120 V rms ac line is equivalent to a 13.7 ? resistance and a 1.90 ? inductive reactance in series. Calculate (a) the impedance of the air conditioner and (b) the average rate at which energy is supplied to the appliance.
(a)
Number
Units
(b)
Number
Units
both are wrong!!!! thanks!!
(a)
Number
Units
An air conditioner connected to a 120 V rms ac line is equivalent to a 13.7 ? resistance and a 1.90 ? inductive reactance in series. Calculate (a) the impedance of the air conditioner and (b) the average rate at which energy is supplied to the appliance.Explanation / Answer
Impedance = sqrt(R^2 + X^2)
= sqrt(13.7^2 + 1.9 ^2)
= 13.83 ohm
Power = V^2/Z
= 120*120*2 / 13.83
= 2982.43 Watt
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