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What must you know in order to calculate a machine's efficiency?
Wiki User
∙ 12y ago
The efficiency tells you how good the machine is.
Efficiency equals the power output of the machine divided by the power that is input via a shaft, or via electrical wires, or via fuel. So if the machine has a low efficiency it wastes power and energy, which costs money.
The average ordinary automobile has an efficiency of 20-25%. A lot of research work goes into improving that figure.
Wiki User
∙ 10y ago
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How do you calculate the efficiency of a power plant when you know its heat rate?
Efficiency = (860.4*100)/(Heat rate in kCal/kWh) or Efficiency = (860.4*4.18*100)/(Heat rate in kJ/kWh) Ex 1: if heat rate is 2500 kCal/kWh, then efficiency is 34.416% Ex 2: if heat rate is 9000 kJ/kWh, then efficiency is 39.96%
What do wheels and gears of a machine are greased in order to decrease I know the choices are potential energy efficiency output and friction?
Friction is decreased.
What is actual efficiency?
I honestly dont know
How do you know the efficiency of a light bulb?
it says on the box?
What do you need to know in order to calculate an objects weight?
You need to know its mass and multiply that mass by 9.8. Mass = mg . m= mass, g = 9.8 m/s
How do you calculate 1050 miles in gas price for a trip?
You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.You need to know the fuel efficiency of the vehicle when you are driving (driving styles do make a difference).Use the fuel efficiency to calculate the amount of gas you will need and then use the gas price to calculate the cost of fuel.
I know how to calculate it but what does Efficiency rating actually mean in basketball?
Efficiency rating: ((PTS + REB + AST + STL + BLK) - ((FGA - FGM) + (FTA - FTM) + TO)) / G
How do you calculate only turbine efficiency not turbine cycle efficiency?
by calculating the inlet steam enthalpy-outlet steam enthalpy we will know the total kcal consumed for output mw required kcal for 1 kwh=860 now campare this with your turbine kcal for 1kwh now you came to know how much is your turbine efficiency................................................................................
How many amps is 2 hp at 230V 3 phase?
6,25AnswerWithout knowing the efficiency of the motor, it's impossible to tell. The horsepower rating of a motor describes its output power; you need to know its input power in order to calculate its current.
How do you calculate the efficiency of a power plant when you know its heat rate?
Efficiency = (860.4*100)/(Heat rate in kCal/kWh) or Efficiency = (860.4*4.18*100)/(Heat rate in kJ/kWh) Ex 1: if heat rate is 2500 kCal/kWh, then efficiency is 34.416% Ex 2: if heat rate is 9000 kJ/kWh, then efficiency is 39.96%
Can you calculate a perimeter of a rectangle but not the length of its sides?
no No. You need to know the length of a rectangle's sides in order to calculate the perimeter.
How do you calculate angle bar weight?
In order for your to know the weight must know the thickness of the angle bar.
How is distance and time alike?
You need to know both of them in order to calculate speed.
How much gas would it take to drive 1005 miles?
That depends heavily on the fuel efficiency of the car you are using and the type of driving.If you know how many Miles per Gallon (MPG) your vehicle gets, you can calculate the fuel like this:Miles / MPG = GallonsThat depends heavily on the fuel efficiency of the car you are using and the type of driving.If you know how many Miles per Gallon (MPG) your vehicle gets, you can calculate the fuel like this:Miles / MPG = Gallons
You know that in electric motor input is electric energy and output is mechanical energy is there any software to check the output for a motor by giving its input that is electrical energy?
Based on what? - If the input is 50 W, the output will be 50 W, it's as simple as that. Or a little less, since real machines are not 100% efficient. No complicated software is required. However, you can't know the exact power output, until you assume some value for an efficiency. If, in the above example, you assume a 90% efficiency, you multiply the 50 W by 0.90.Based on what? - If the input is 50 W, the output will be 50 W, it's as simple as that. Or a little less, since real machines are not 100% efficient. No complicated software is required. However, you can't know the exact power output, until you assume some value for an efficiency. If, in the above example, you assume a 90% efficiency, you multiply the 50 W by 0.90.Based on what? - If the input is 50 W, the output will be 50 W, it's as simple as that. Or a little less, since real machines are not 100% efficient. No complicated software is required. However, you can't know the exact power output, until you assume some value for an efficiency. If, in the above example, you assume a 90% efficiency, you multiply the 50 W by 0.90.Based on what? - If the input is 50 W, the output will be 50 W, it's as simple as that. Or a little less, since real machines are not 100% efficient. No complicated software is required. However, you can't know the exact power output, until you assume some value for an efficiency. If, in the above example, you assume a 90% efficiency, you multiply the 50 W by 0.90.
What do wheels and gears of a machine are greased in order to decrease I know the choices are potential energy efficiency output and friction?
Friction is decreased.
What is the answer to 4a minus 4 equals?
You would need to know what a is equal to in order to calculate this equation.
