Question

Двигатель кондиционера потребляет силу тока 5 А и от сети напряжением 220 В. какую работу выполняет двигатель за 10 минут если его КПД равен 90%?

Answer 1

 Работа двигателя A=IUt (t=600c)
A=5А*220В*600с=660000Дж
А работа, совершенная двигателем A=A*0,9=660000Дж*0.9=594000Дж

Answer 2

Calculation of Work Done by the Air Conditioner Motor

To calculate the work done by the air conditioner motor, we need to use the formula:

Work (W) = Power (P) × Time (t)

The power (P) can be calculated using the formula:

Power (P) = Current (I) × Voltage (V)

Given that the current (I) is 5 A and the voltage (V) is 220 V, we can calculate the power:

Power (P) = 5 A × 220 V = 1100 W

Now, we need to calculate the time (t). It is given that the motor operates for 10 minutes.

Time (t) = 10 minutes

However, we need to convert the time to seconds to match the unit of power (Watts).

Time (t) = 10 minutes × 60 seconds/minute = 600 seconds

Now, we can calculate the work done by the motor:

Work (W) = Power (P) × Time (t) = 1100 W × 600 seconds = 660,000 Joules

Therefore, the air conditioner motor performs 660,000 Joules of work in 10 minutes, assuming an efficiency (η) of 90%.

Please note that the sources provided do not contain specific information related to this calculation.