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What is the effect of friction on a machine?
Friction makes a machine less efficient by wasting energy.
The efficiency of an actual machine is always less than what percent?
It is always less than 100% Theoretical machines can have efficiencies of 100% but in practice there is always some energy loss Efficiencies of more than 100% are not allowed by the laws of thermodynamics!
Does an ideal machine have an effciency of 100 percent?
No, there is not such thing as an ideal machine; it's just an idea.
Why is difficult to increase the efficiency of a machine?
cheese
Why is the work output of a machine always less than the work input?
In a real machine, the output work is always less because input energy will be converted to heat energy and lost.
Why a normal machine could not have the mechanical efficiency of 100?
Because there is always going to be friction, the efficiency of any machine will always be less then 100 percent.
Why is w out is always less than w in?
That is becasue no machine is 100% efficient - SOME energy usually gets wasted.
How is an efficient airplane designed and why?
Why: Because if it is efficient, less fuel is required.
What is the effect of friction on a machine?
Friction makes a machine less efficient by wasting energy.
The efficiency of an actual machine is always less than what percent?
It is always less than 100% Theoretical machines can have efficiencies of 100% but in practice there is always some energy loss Efficiencies of more than 100% are not allowed by the laws of thermodynamics!
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
A tax always makes a market less efficient true or false?
true
Does an ideal machine have an effciency of 100 percent?
No, there is not such thing as an ideal machine; it's just an idea.
Why in a real machine the output work is always less the input work?
In a real machine, part of the energy (or power) is always wasted.
Is it more economic to buy energy-efficient commercial kitchen equipment?
Energy-efficient equipment of any kind is always the best way to go. In the long run you will see that the cost of the equipment outweighs the cost you will pay to run the machine because you are using less electricity.
Why is difficult to increase the efficiency of a machine?
cheese
Why is the work output of a machine always less than the work input?
In a real machine, the output work is always less because input energy will be converted to heat energy and lost.
