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What is the efficiency of a device that gives you 100 units of useful energy for every 100 units you put in it?
The efficiency of the device is 100%. This means that all the energy input into the device is converted into useful energy output without any loss.
Water is heated by gas in a boiler. The water is put in a tank. For every 111J of energy released by the gas 100j of energy is taken in by the boiler. What is the percentage efficiency off the boiler?
The efficiency of the boiler is calculated as the ratio of useful energy output (100J) to the total energy input (111J), which is then multiplied by 100 to get the percentage. So, efficiency = (100/111) * 100 = 90.09%.
What does efficiency have to do with work and work out?
Efficiency = (Useful Work done)/(Total Work done).This is usually expressed as a percentage.Example:For every 200KJ of energy released from coal in a power plant, only 60KJ is converted to electrical energy. Therefore, Efficiency = 60/200 =30%.
What is the energy efficiency of a light bulb that gives you 30 units of useable energy for every 100 units of energy put into it?
The energy efficiency of the light bulb is 30%. It is calculated by dividing the useable energy output by the energy input, and multiplying by 100 to get the percentage. In this case, 30 units of useable energy divided by 100 units of energy input equals 0.3, or 30%, efficiency.
What is the percentage of work put into a machine that converted into useful work output?
The efficiency of a machine is typically calculated as the ratio of useful work output divided by total work input, then multiplied by 100 to get a percentage. For example, if a machine outputs 80 units of useful work for every 100 units put in, the efficiency would be 80%.
What is the efficiency of a device that gives you 100 units of useful energy for every 100 units you put in it?
The efficiency of the device is 100%. This means that all the energy input into the device is converted into useful energy output without any loss.
Water is heated by gas in a boiler. The water is put in a tank. For every 111J of energy released by the gas 100j of energy is taken in by the boiler. What is the percentage efficiency off the boiler?
The efficiency of the boiler is calculated as the ratio of useful energy output (100J) to the total energy input (111J), which is then multiplied by 100 to get the percentage. So, efficiency = (100/111) * 100 = 90.09%.
What device transforms mechenical energy to electrical energy?
Every conventional electrical generator does that.
Is heat released from every transfer?
Energy always turns from useful energy to less useful forms of energy. so in theory the answer is no, but in reality there is always some heat generated in all transformations.
What does efficiency have to do with work and work out?
Efficiency = (Useful Work done)/(Total Work done).This is usually expressed as a percentage.Example:For every 200KJ of energy released from coal in a power plant, only 60KJ is converted to electrical energy. Therefore, Efficiency = 60/200 =30%.
What is the energy efficiency of a light bulb that gives you 30 units of useable energy for every 100 units of energy put into it?
The energy efficiency of the light bulb is 30%. It is calculated by dividing the useable energy output by the energy input, and multiplying by 100 to get the percentage. In this case, 30 units of useable energy divided by 100 units of energy input equals 0.3, or 30%, efficiency.
How often should a refrigerator recharge be performed to ensure optimal performance and energy efficiency?
A refrigerator recharge should be performed every 6-12 months to maintain optimal performance and energy efficiency.
What is efficiency when applied to a machine?
Efficiency is the ratio of the useful work you can get out of the machine to the work you put in. It is always less than 100% because of losses due to friction, heat loss, wear and deformation. For instance the efficiency of a muscle in producing movement is between 14 and 27 %. To put it another way, for every 100 joules of chemical energy in the food we burn, only 14 to 27 % ends up as kinetic energy. Most of the rest is heat.
What is the percentage of work put into a machine that converted into useful work output?
The efficiency of a machine is typically calculated as the ratio of useful work output divided by total work input, then multiplied by 100 to get a percentage. For example, if a machine outputs 80 units of useful work for every 100 units put in, the efficiency would be 80%.
You have just designed a machine that uses 1000 joules of work from a motor for every 800 joules of useful work the machine supplies What is the efficiency of your machine?
The efficiency of the machine can be calculated as the ratio of useful work output to total work input, multiplied by 100 to express it as a percentage. In this case, the efficiency would be 80% (800/1000*100).
How often should I clean the fridge condenser coils to ensure optimal performance and energy efficiency?
You should clean the fridge condenser coils every 6 to 12 months to maintain optimal performance and energy efficiency.
How much energy is wasted for every 1000 megajoule?
It depends on the efficiency of the appliance. If an electric motor has an efficiency of 0.7, then for every 1000 megajoules, 30 megajoules will be wasted as useless heat or sound or other useless energy form.
