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For efficiency, you have to consider the energy or work that you get out of the machine, compared to the energy or work that you put into the machine. Its what you get out, divided by what you put in.
By multiplying the result by 100, you should then get the efficiency expressed as a percentage, which is the normal way of describe how efficient a machine or process is.
efficiency = (Work out/Work in) x 100
Sometimes you are given the efficiency in a problem, but then have to calculate either the work out or work in, so then its just a case of rearranging the equation above.
What else can I help you with?
Efficiency can be express mathematically as?
Efficiency = Output/Input. This is usually expressed as a percentage but may be given in the form of a ratio.Another AnswerEfficiency is output power divided by input power, normally expressed as a percentage.
What is the formula to calculate percent efficiency?
(work out/work in) x 100
How do you calculate ikw chillers?
To calculate the kW (kilowatt) rating of chillers, you typically start by determining the cooling load, which is measured in tons. One ton of cooling is equivalent to approximately 3.517 kW. Therefore, to convert tons to kW, multiply the total tonnage by this factor. Additionally, you may consider the efficiency of the chiller, expressed as the Energy Efficiency Ratio (EER) or Coefficient of Performance (COP), to refine your calculations based on the specific performance characteristics of the chiller in use.
What is the Formula for calculating the efficiency of a machine?
Efficiency = Output value / Input valueFor example, if a machine needs 10 KW to run and produces 8 KW, its power efficiency is 8/10 = 0.8 or 80%Efficiency is always between 0 and 1 (or 0 and 100 if expressed as a percentage.)
How do you find the input power in the electric efficiency formula if you have the output power and the efficiency percent?
Output equals efficiency times input; in formula, Ot = Ef x In and so In = Ot/Ef. To calculate the original input, divide the output by the efficiency.
How do you calculate spring efficiency?
Spring efficiency is calculated by dividing the work output of a spring by the work input. It is expressed as a ratio or percentage, with higher values indicating better efficiency. The formula is: Efficiency = (Work output / Work input) x 100%.
How to calculate the efficiency of a heat engine?
To calculate the efficiency of a heat engine, you can use the formula: Efficiency (Work output / Heat input) x 100. This formula compares the amount of useful work produced by the engine to the amount of heat energy it takes in. The efficiency is expressed as a percentage, with higher percentages indicating a more efficient engine.
The efficiency of a machine is usually expressed in?
The efficiency of a machine is usually expressed as a percentage. The ideal efficiency of a machine is 100-percent.Another AnswerThere are no units of measurement for efficiency, because you are comparing like with like: output power divided by input power.
How do you calculate the efficiency of air cooled condenser?
You can calculate the efficiency of an air-cooled condenser by dividing the actual heat transfer rate by the maximum possible heat transfer rate. The efficiency is typically expressed as a percentage, with higher percentages indicating better performance. Factors that can affect the efficiency include the design of the condenser, ambient air temperature, and air flow rate.
How do you find the efficiemcy of an object?
To find the efficiency of an object, you calculate the ratio of useful output to total input. Efficiency is typically expressed as a percentage, with a higher percentage indicating better performance. Formula: Efficiency = (useful output / total input) * 100%.
How do you calculate efficiency of air dryer?
The efficiency of an air dryer can be calculated by measuring the difference in the water content of the air before and after passing through the dryer, and then dividing this by the initial water content to get a percentage. The efficiency is typically expressed as the percentage of water removed from the air.
How do you calculate ROI?
Definition of 'Return On Investment - ROI'A performance measure used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments. To calculate ROI, the benefit (return) of an investment is divided by the cost of the investment; the result is expressed as a percentage or a ratio. The return on investment formula:
How do you calculate cooling coil efficiency?
Cooling coil efficiency is typically calculated as the ratio of the amount of heat removed by the coil to the total amount of heat that could have been removed if the coil operated at 100% efficiency. This can be expressed as (Actual heat removal) / (Maximum heat removal). The efficiency of a cooling coil is affected by factors such as air flow rate, temperature difference across the coil, and the design of the coil itself.
What is the unit of efficiency?
Efficiency is typically expressed as a percentage, representing the ratio of useful output to input.
What are the units of efficiency?
Efficiency is typically expressed as a percentage, representing the ratio of useful output to input. It can also be expressed as a dimensionless ratio or a specific unit depending on the context, such as miles per gallon for fuel efficiency or lumens per watt for electrical efficiency.
How do you calculate the efficiency of the car?
check here http://www.wonderhowto.com/how-to-calculate-cars-fuel-efficiency-mpg-084812/
Efficiency is usually expressed as a what?
Efficiency is usually expressed as a ratio of output to input, such as output divided by input. It measures the effectiveness of achieving desired results with minimal waste of resources.
