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What temperature would the cold reservoir need to be for a Carnot engine to achieve 100 percent efficiency?
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A heat engine does 7190 J of work in each cycle while absorbing 13.8 kcal of heat from a high-temperature reservoir What is the efficiency in percent of this engine?
The efficiency of a heat engine is given by n = Wu / QH Where Wu - is the useful work (7190 J) QH - Heat taken from the hot reservoir (13,8 x 4184 J) 1 cal = 4,184 J => 1 kcal = 1000 cal = 4184J So n = 7190 / (13,8 x 4,184 x 1000) J and since you want that in percent multiply the result by 100.
What efficiency percent of nuclear?
99.4%
What is percent efficiency?
it is the amount of work that can be done. a machine can use 300,000 J of energy but it only uses 263,000 J. that is percent efficiency.
What is the efficiency of the pulley system in percent?
The efficiency of a pulley system depends on how it is set up. Be specific.
Why is is that is impossible to have a 100 percent efficiency?
Cuz nuffin is purfect
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A reservoir contains 75 percent saltwater
What is the efficiency of most power plants?
Light water nuclear plants like PWR and BWR have efficiency of about 33 percent, that is the ratio of electric output to reactor thermal output. Gas cooled reactors can be up to 40 percent as they work at higher temperature.
Can you achieve 100 percent efficency with a lever and fulcrum?
Not if you consider the energy expended to grip or engage the lever--this does account for a minimum amount of lost efficiency
A heat engine does 7190 J of work in each cycle while absorbing 13.8 kcal of heat from a high-temperature reservoir What is the efficiency in percent of this engine?
The efficiency of a heat engine is given by n = Wu / QH Where Wu - is the useful work (7190 J) QH - Heat taken from the hot reservoir (13,8 x 4184 J) 1 cal = 4,184 J => 1 kcal = 1000 cal = 4184J So n = 7190 / (13,8 x 4,184 x 1000) J and since you want that in percent multiply the result by 100.
Does a refrigerator have 100 percent efficiency?
nothing has 100% efficiency.
What machine on earth has the greatest percentage of efficiency?
Perhaps an electrical AC transformer can have 99 percent efficiency. A loudspeaker can have only 1 percent efficiency.
Is it possible to attain an efficiency of 100 percent in heat engines?
The maximum efficiency of the carnot engine only depends on two factors: 1 - The temperature of the hot reservoir (TH) 2 - The temperature of the cold reservoir (TC) And is given by (TH - TC) / TH « or » 1 - TC / TH So by that we can see the maximum efficiency (100%) would be when the difference of temperatures between the two reservoirs is infinite.
What efficiency percent of nuclear?
99.4%
What is percent efficiency?
it is the amount of work that can be done. a machine can use 300,000 J of energy but it only uses 263,000 J. that is percent efficiency.
Which Mechanical efficiency has efficiency100 percent?
watches
Why can efficiency never can be 100 percent?
The laws of thermodynamics imply that there will always be some loss of efficiency.
What is efficiency of an engine that gives off 70 percent thermal energy?
It is not a good efficiency engine.
