The current in the air conditioner motor is 5 A at a mains voltage of 220 V. What work does the motor
| April 30, 2021 | education
The current in the air conditioner motor is 5 A at a mains voltage of 220 V. What work does the motor do in 10 minutes if the efficiency is 90%?
Given: I (current in the motor of the air conditioner under consideration) = 5 A; U (mains voltage) = 220 V; t (air conditioner operation time) = 10 min (600 s); η (motor efficiency) = 90% (0.9).
To calculate the work performed by the air conditioner under consideration, we will use the formula: η = Ak / Az and Ak = Az * η = U * I * t * η.
Calculation: Ak = 220 * 5 * 600 * 0.9 = 594 * 10 ^ 3 J (594 kJ).
Answer: In 10 minutes, the engine of the air conditioner under consideration did a useful work of 594 kJ.
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