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Because all the electrical energy supplied to the heater is emitted as heat. There is no other way for the energy to escape.
Tyrel Wiegand
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Why may an electrical heater be 100 percent efficient?
They can never reach that level of efficiency.
Why are electric heaters 100 percent efficient?
All the power absorbed by the heating element and the connecting wire is converted into heat, leading to the 100% efficiency figure.
How do you calculate the efficiency of an electrical mechanical system?
You could have an electric motor driving a reduction gearbox, for example. The efficiencies of both might be considered individually, or as a whole. As a whole is easier. (Work out/ work in) x 100 = efficiency%. Or, (power out/ power in) x 100 = efficiency%. Or, (force out/ force in) x100 = efficiency%. It depends on what you have to work with, what you use. If you did need to calculate electrical and mechanical efficiencies separately because of different units, the final overall efficiency will be (total of the percentages) / (number of percentages).
How many minutes would be required for a 300.0 W immersion heater to heat 250.0 g of water from 20.0 ºC to 100.0ºC?
Assuming 100% efficiency (not possible), ~293 Hrs.
How bright is an led bulb marked 100 lumen?
Brightness is measured in lumens so the bulb has a brightness of 100 lumens. The electrical power the bulb uses is measured in watts. The efficiency of a bulb is expressed in the number of lumens produced per watt of electric power.
Why is an electric heater rated at 100 percent efficiency?
Because all the electrical energy supplied to the heater is emitted as heat. There is no other way for the energy to escape.
What is the Maximum efficiency machine?
The electric space heater. It's the only common machine that's 100% efficient.
When energy input is equal to energy output?
100 % efficiency, and the beginning of perpetual motion. OR you have an electric heater - and all loses are what you want.
Is edenpure a efficient electric space heater?
Efficient, yes. But a poor choice for a heater. It's just a marketing gimmick. Every electric heater is nearly 100 percent efficient. Efficiency is a term not understood by many. Energy efficiency - useful work per quantity of energy. In other words, What is the job of an electric heater? To make heat. How much of the electricity fed to the heater is turned into heat? All of it. That makes it 100 percent efficient. In contrast an incandescent light bulb is only about 5 percent efficient, only 5% of the electricity fed to it is converted to light the other 95% is converted to heat.
Why is an electric heater the only appliance that is 100 percent efficient?
It is difficult to believe that anything has a 100% efficiency rating, even an electric heater. Electricity is very good at producing heat. Any loss of efficiency would be in how much heat is lost to the surrounding equipment and building structure in the immediate vicinity of the heater, which may be in the basement, as opposed to heating the air in living or working areas which is probably what you want. Electricity is very expensive when compared to other forms of heat, such as natural gas.
Why may an electrical heater be 100 percent efficient?
They can never reach that level of efficiency.
What is the efficiency of a motor that converts 100J of electric energy into 70j of useful energy?
70% efficient Take: Useful work out --------------------- X 100 = efficiency Work in
What is the efficiency of a generator that produces 80 kilowatts of electric energy and has electric and mechanical losses of 20 kilowatts?
power in equals power output plus power loss so input power for this question is 100 kw now use efficiency formula 100/80 times 100 to get 80% efficient
When is efficiency of 3phased Induction motor maximum what is the condtion for maximum efficiency in induction motor?
It is maximum at about 75% to 100% of the motor rated load. Efficiency is maximum at unity power factor , when R=X and when variable losses Is equal to constant losses at rated load.
What are electric motor loads of normal household appliances?
Most electric motors perform from 50 percent to 100 percent of their rated load. Most appliances have a maximum efficiency load at 75 percent, which may drop considerably to about less than 50 percent depending on the individual motor.
What is the examples of electrical energy to thermal energy?
An electric heater ( the only known 100% efficient device ).
Why are electric heaters 100 percent efficient?
All the power absorbed by the heating element and the connecting wire is converted into heat, leading to the 100% efficiency figure.
