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The efficiency of machines is usually expressed in?
Efficiency is expressed as a factor, like 0.9, or a percentage - the above is equivalent to 90%. An efficiency of 90% means that 90% of the input energy (or a factor of 0.9) is converted into whatever you want to convert it to; the remainder is wasted.
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%.
When discussing engines the ratio of output work to input work expressed as a percentage is called .?
The efficiency of the machine.
Does a plane angle have a dimension?
Yes, usually expressed in degrees.
What does pore size mean?
The size of the openings of filters or screens, usually expressed in micrometers.
The efficiency of a machine is usually expressed in?
The efficiency of a machine is usually expressed as a percentage. The ideal efficiency of a machine is 100-percent.Another AnswerThere are no units of measurement for efficiency, because you are comparing like with like: output power divided by input power.
What does efficiency mean in science?
The Efficiency of a system is the ratio (Input Energy / Output Energy). The fraction is usually expressed as a percentage.
What do you understand by efficiency of motor or generator?
The efficiency of any machine is the output power divided by the input power, usually expressed as a percentage.
Efficiency can be express mathematically as?
Efficiency = Output/Input. This is usually expressed as a percentage but may be given in the form of a ratio.Another AnswerEfficiency is output power divided by input power, normally expressed as a percentage.
The efficiency of machines is usually expressed in?
Efficiency is expressed as a factor, like 0.9, or a percentage - the above is equivalent to 90%. An efficiency of 90% means that 90% of the input energy (or a factor of 0.9) is converted into whatever you want to convert it to; the remainder is wasted.
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%.
When discussing engines the ratio of output work to input work expressed as a percentage is called .?
The efficiency of the machine.
What is the coal energy efficiency?
If it is burned - which is the way such fuels are usually used - the energy efficiency is the energy efficiency of a heat engine. The theoretical maximum efficiency is the Carnot efficiency; the real efficiency will usually be considerably less than that.
How do you calculate efficiency and how is it expressed?
For efficiency, you have to consider the energy or work that you get out of the machine, compared to the energy or work that you put into the machine. Its what you get out, divided by what you put in. By multiplying the result by 100, you should then get the efficiency expressed as a percentage, which is the normal way of describe how efficient a machine or process is. efficiency = (Work out/Work in) x 100 Sometimes you are given the efficiency in a problem, but then have to calculate either the work out or work in, so then its just a case of rearranging the equation above.
What is the ration of work output to work input and is usually expressed as a percent?
Assuming that you mean ratio, and not ration, it is a measure of the efficiency. It has a value between 0 and 1 and a percentage is a convenient way to represent such values.
What of the machine compares the output work to the input work and is expressed as a percent?
That's the machine's "efficiency".
How can the efficiency of a chemical reaction be expressed?
A chemical reaction is represented by a chemical equation.
