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If the power input to a machin 75w and the output is 50w the efficiency is?
Wiki User
∙ 14y ago
Generally efficiency is the ratio of the energy or power utilized usefully to the energy or power given as input to the device.
So efficiency in this case = 50/75 = 2/3
Usually efficiency will be given in percentage. So multiplying 2/3 by 100 we get 66.7% as the efficiency of the machine.
Wiki User
∙ 14y ago
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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.
The ratio output power to input power in percent is called?
B. Efficiency
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 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.)
What is the difference between input and output?
What is the difference between output and input?If you sing into a microphone you can hear the microphone's output.Sound coming out of the power amp to the speakers.That is the input of the loudspeaker.Do you see the difference?Your voice is the microphone's input. Its output is electrical impulses that are input to the amplifier. The amplified impulses are the output of the amplifier and input to the speaker. Sound waves are output of the speaker and input to your ears.
Efficiency is a comparison of?
Efficiency is output power divide by input power.
What is efficiency and how is it calculated?
The efficiency is output divided by input.
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 is the efficiency of a machine calculated?
Efficiency = useful output power / input power
What is the formula to efficiency?
Efficiency = (output power/input power) x 100%
What is the formula of efficiency?
The formula of efficiency is power output divided by the power input.
How is a machine's efficiency of a calculated?
Efficiency = useful output power / input power
How is energy efficiency determined?
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
What is brake thermal efficiency?
The ratio of brake power output to power input
The ratio output power to input power in percent is called?
B. Efficiency
How the efficiency of machine be obtained?
Efficiency is output power divided by input power. You somehow have to measure, calculate, or estimate both; the details will vary depending on the type of energy input and energy output.
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.
