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Power is the amount of work(W) done in a given amount of time(t).
Efficiency is a measure of how a machine is effective. This is done by taking the ratio of output work and dividing by the work input
e=Work/WI*100
Answer
Efficiency is the ratio of a machine's output power to its input power, usually expressed as a percentage.
A machine will always have losses, so its efficiency will always be less than 100%.
Further to the original answer, 'effectiveness' and 'efficiency' are two completely-different concepts. Effectiveness (or 'efficacy') defines whether or not a device achieves what it is designed to achieve; efficiency provides a way of defining the losses that occur while the device achieves what it is designed to achieve. For example, a motor might be perfectly 'effective' at producing rotatary movement, but it loses 5% of its input power doing so. So it is 100% effective but only 95% efficient,
What else can I help you with?
How do you calculate electrical efficiency?
Electrical efficiency is calculated by dividing the useful output power (in watts) by the input power (in watts) and multiplying by 100 to get a percentage. The formula is: Efficiency = (Useful output power / Input power) * 100. The higher the percentage of efficiency, the more effective the electrical system is at converting input power into useful output power.
If 35 percent of the fuel is converted into electricity this is called the what of the power plant?
It is the efficiency of the power plant.
What is the formula of efficiency?
Efficiency is typically calculated as the ratio of actual output to maximum possible output, expressed as a percentage. The formula for efficiency is: Efficiency = (Actual output / Maximum possible output) * 100%.
What is the formula of efficiency and power?
Efficiency is calculated as output power divided by input power, usually expressed as a percentage. Power is the rate at which work is done or energy is transferred, calculated as the product of force and velocity.
How much electrical power will a winch use when it has an efficiency of 0.5 and a useful lifting power of 2500 watts?
If the efficiency is 0.5, then the useful lifting power is 0.5 of the powerthat it must consume in order to do the job.2,500 W = 0.5 of input power.input power = 2,500 / 0.5 = 5 KW.
Efficiency is a comparison of?
Efficiency is output power divide by input power.
What is the formula to efficiency?
Efficiency = (output power/input power) x 100%
How is the efficiency of a machine calculated?
Efficiency = useful output power / input power
The ratio of output power to input power in percent is called a conductivity b efficiency c work d horsepower?
B.) efficiency
How do you calculate electrical efficiency?
Electrical efficiency is calculated by dividing the useful output power (in watts) by the input power (in watts) and multiplying by 100 to get a percentage. The formula is: Efficiency = (Useful output power / Input power) * 100. The higher the percentage of efficiency, the more effective the electrical system is at converting input power into useful output power.
If 35 percent of the fuel is converted into electricity this is called the what of the power plant?
It is the efficiency of the power plant.
What is efficiency and how is it calculated?
The efficiency is output divided by input.
What are high efficiency motors?
The efficiency of a motor is the output power divided by the input power. The difference is the lost power which appears as heat usually. High-efficiency motors produce very little lost power. But they tend to be more massive and expensive to make, so that most motor designs have to compromise on efficiency.
What is the efficiency of a dc generator that requires 200 watts of energy to supply 160 watts of output power?
The efficiency of a DC generator can be calculated using the formula: Efficiency (%) = (Output Power / Input Power) × 100. In this case, the input power is 200 watts and the output power is 160 watts. Thus, the efficiency is (160 W / 200 W) × 100 = 80%. This means the generator operates at 80% efficiency.
What is inverter efficiency?
Inverter efficiency varies with DC input voltage, ambient temperature, and operating power level of the inverter. It can mean power-out divided by power-in.
What is the formula of efficiency?
Efficiency is typically calculated as the ratio of actual output to maximum possible output, expressed as a percentage. The formula for efficiency is: Efficiency = (Actual output / Maximum possible output) * 100%.
Why is a high efficiency machine is more desirable than a low efficiency machine?
A high efficiency machine will produce more of what is it that you want with the same power as the low efficiency one. In other words, for a low efficiency machine do as much as a high efficiency one, you have to give it more power (energy).
