Hi guys. I'm a mechatronics student and we just started electronics in our second semester. I need some help with basic questions please^^
An electrical engine requires a flow of 5 A with the useful power of 1kW is connected to a voltage source of 220 V and has been operating for 3 hours. Calculate
1) Invested power
2) Invested energy
3) The energy conversion efficency of the engine
4) The price of activating the engine, if the price of the electrical energy is 0.42 shekels for 1kWh.
My attempt at the answers attached
An electrical engine requires a flow of 5 A with the useful power of 1kW is connected to a voltage source of 220 V and has been operating for 3 hours. Calculate
1) Invested power
2) Invested energy
3) The energy conversion efficency of the engine
4) The price of activating the engine, if the price of the electrical energy is 0.42 shekels for 1kWh.
My attempt at the answers attached
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