Question

3. У процесі роботи пї машини за деякий час робоче тіло отримало від нагрівника 1,5 МДж 4 теплоти i передало холодильнику 1,2 МДж 3 теплоти. Обчислити ККД машини.​

Answer 1

Ответ:

η = (1.5 - 1.2) / 1.5 = 0.2 = 20%.

Answer 2

Calculation of Efficiency (ККД) of the Machine

To calculate the efficiency (ККД) of the machine, we need to use the formula:

Efficiency (ККД) = (Output Energy / Input Energy) * 100%

In this case, the input energy is the heat received from the heater, which is 1.5 МДж (1.5 megajoules), and the output energy is the heat transferred to the refrigerator, which is 1.2 МДж (1.2 megajoules).

Substituting these values into the formula, we get:

ККД = (1.2 МДж / 1.5 МДж) * 100%

Simplifying the expression, we have:

ККД = 0.8 * 100%

Therefore, the efficiency (ККД) of the machine is 80%.

Please let me know if you need any further assistance!