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What is the useful energy output and wasteful energy output of electric fan?
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List several examples of how electrical energy and light energy are useful to you?
Electrical energy and light energy are useful to me in a variety of ways from the machines used to make the food you eat to the energy used to purify the water you drink. The clothes you wear are even dyed different colors from the light energy alone.
How a digital electric more useful than an analog electric meter?
in a digital meter you get a digital value of your measurement. but in analog meter you have to check the position of the pin along the scale and find out the value.
What is an electrical knife?
I have an electric knife. They are very useful when cutting things like roasts, turkeys and hams. Here is a site on electric knives http://www.amazon.com/b?ie=UTF8&node=3737391
What is the main purpose of a transformer?
step up transformer output gives the high voltage which is useful for transmiission of electricity
What is power transmission?
Power transmission is the movement of energy from its place of generation to a location where it is applied to performing useful work.
What is the useful and wasted energy in an electric heater a television an electric kettle headphones Thanks for your help?
The use ful energy from headphones would be sound , the wasteful would be battery power.
What does energy efficiency?
Energy conversion efficiency is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The useful output may be electric power, mechanical work, or heat.
Does an electric can opener convert electric energy sound energy?
Not likely - any machine wastes some energy; that would reduce the useful output energy.
How is energy efficiency determined?
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
Total energy input equals equals the useful energy output plus?
Efficiency = ( useful energy output / total energy input ) x 100
What is the relationship between efficiency useful energy output and total energy output?
pie
Is elastic energy useful in a bouncy ball or is it wasteful?
It is usefull because how would the ball bonce without the being elastic energy in it???
Is an electric toothbrush input energy equal yo useful output energy?
To my knowledge, the input energy would be less than the output due to the fact that no machine is 100% efficient. There would be some energy lost as a result of friction or some other such force that hinders efficiency.
What is the useful energy output that the CFL is designed to produce?
SEX energy
Friction is inveitable but it has disadvantages why?
Friction is a force that must be overcome for no useful purpose. It takes energy to do this, and thus is wasteful.
Does an electric iron convert electric energy to heat and motion?
heat(useful energy) and sound(waste energy)
A comparsion of energy output with energy input?
The result (ratio) of such a comparison is called the efficiency. Note that total energy output must be equal to energy input (conservation of energy); however, what is relevant for this comparison is the useful energy output.
