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Is a machine physically possible that has an efficiency greater than 100 percent?
Wiki User
∙ 14y ago
Not if the laws of physics - specifically thermodynamics - are correct.
Wiki User
∙ 14y ago
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Why is the efficiency of a machine less than 1?
An efficiency factor of 1 (or 100% efficiency) is not possible due to losses that cannot be reduced to zero. These losses take the form of friction, heat loss etc.
Is it possible to design a machine that has an efficiency that is greater than 100 percent?
An ordinary domestic heat pump appears to have an efficiency of up to 300% or so. That is it will deliver 3kw of heat for each 1kw of electricity it consumes. But that is illusory because it extracts the extra heat from the water vapour in the air. So in real life, the laws of physics win out.
What is the mechanical efficiency of a machine whose work input is 100j and work output is 30j?
The mechanical efficiency of this machine is 30 percent.
How do you calculate the efficiency of a machine?
Efficiency is nothing but calculating how the machine is performing for what it has been made for, Efficiency is usually calculated in % as (output/input )X100. for Eg. the Thermal efficiency of an reciprocating gasoline engine can be calculated as follows, Let, the input for an reciprocating engine is 12MJ and its out put is 4MJ then Efficiency is (4/12)X100 = 33%
How do you calculate the mechanical efficiency of a machine?
Work output divided by Work input Times 100
Can a machine's efficiency can be greater than 100 percent?
nope, efficiency o fa machine cannot be greater than 100%...theoretically it shows sometime that efficiency of a machine can be 100%, but practically it cannot be possible as there is some loss of energy is always involved in different ways.
Does an ideal machine would have an efficiency greater than one?
No, an efficiency greater than one would not be possible, since that would violate a very fundamental law of physics: conservation of energy. The efficiency of an "ideal machine" would be one, in many cases; the efficiency of an ideal Carnot engine would be less than one.
Is it possible to design a machine that has an efficiency that is greater than 100 percent yes or no?
No. That would violate Conservation of Energy, so it follows that it isn't possible.
How does effieciency of the machine affects it's performance?
if a machine is not efficient, it cannot fully utilise its performance. actual performance = efficiency x possible performance efficiency = actual performance / possible performance efficiency is always a decimal number less than 1, as no machine is perfect in terms of efficiency
Is a machine physically possible that has an efficicency greater than 100 percent?
No. In fact, in the real world, a machine with an efficiency of only 100%isn't even physically possible.But why isn't an efficiency greater than 100% physically possible ?Efficiency means (output energy) divided by (input energy) .If efficiency is greater than 100%, that means output/input is greater than ' 1 ', andthat means that you get more energy out of the machine than you put into it.Where could that extra energy come from ? Remember the law of conservationof energy ? It says that energy is never created or destroyed. So you can't getmore energy out of a machine than you put into it, and output/input can't bemore than ' 1 '.It sure would be nice though: Put some energy into the machine to get it started,and then just sit back and watch it run. Out of the end comes more energy thanwhat it takes to run the machine, so you split up the energy that comes out. Youtake just enough to keep the machine running, and you put that much back into it.Then you still have some energy left over, so you take that part and use it to heatyour house, or pump water out of the well, or generate electricity to light your Christmaslights, or sell it. You'd never need to buy any more energy, or burn any coal or oil orwood or uranium, because you'd get enough out of the machine to keep it runningplus more energy to use or sell.
Can a machine be more than 100 percent efficient?
100% efficiency would mean that the machine is able to transform energy from one form into another without any loss of energy from the system in the process. For it to have greater than 100% efficiency, it would have to somehow generate additional energy, not contained in the system, in the process, and this is not possible.
Describe why a high-efficiency machine is more desirable than a low-efficiency machine?
Efficiency is the ratio of the energy converted into useful work by the machine to the energy supplied to the machine. Certainly it will not be possible to convert all the energy supplied into useful work because of wastage of energy due to so many reasons. So efficiency will be always less than 1. As the efficiency becomes more the loss would become less. Hence it is desirable.
If the output work of a simple machine is than the input work the machine is said to have less than 100 percent efficiency?
input
Why is a high efficiency machine is more desirable than a low efficiency machine?
A high efficiency machine will produce more of what is it that you want with the same power as the low efficiency one. In other words, for a low efficiency machine do as much as a high efficiency one, you have to give it more power (energy).
Why is the efficiency of a machine less than 1?
An efficiency factor of 1 (or 100% efficiency) is not possible due to losses that cannot be reduced to zero. These losses take the form of friction, heat loss etc.
What percentage of energy is converted into useful energy?
It depends on the efficiency of the machine. No machine is perfect and there are always losses and waste. Usually the losses are a greater percentage than the useful energy.
If the efficiency of a machine increases what would occur?
Then the machine would have a greater output power, or alternately, require less input power.
