### What is the efficiency of three phase induction motors?

Efficiency of a motor is the ratio of power supplied to it, to the power produced by it, expressed as a percentage. This varies from motor to motor. It is calculated using the equation: efficiency = ((Pin - Pout) / Pin) * 100 A typical power conversion efficiency for an induction motor over ½ HP would be 90% Comment Efficiency is actually the ratio of output power to input power, not the other way around!

### What is the highest electric motor efficiency?

Motor efficiency depends on the motor size and how much it is loaded. You get the best efficiency above 75% of the rated load for that motor. Note the table below: Horsepower Standard Premium Efficiency Efficiency% Efficiency% 1 --- 78.0 --- 82.5 2 --- 78.5 --- 84.0 5 --- 84.0 --- 89.6 10 --- 84.0 --- 91.1 15 --- 87.5 --- 91.7 25 --- 90.2 --- 93.0 50 --- 91.7 --- 94.1 100 --- 91.7…

### What motor is used in sprinkler irrigation systems?

Motor size depends upon number of factore. 1- flow of pupm 2- required head 3- efficiency of pupm used 4- efficiency of electric motor used The formula is H.P required= Q.H\ 3960. Pump efficiency. Motor efficiency where Q= GPM H= Ft Efficiency= In fraction( 70 % = 0.7) Engr. Usman Khalid +923336901945 usman.engr87@gmail.com

### How do you calculate the efficiency of an induction motor?

efficiency is the ration of Power_Out/Power_In. So simply take the Power out Rpm*Torque and divide by the Power in Volts * Amps Note: You need to you numbers found while the motor is running. Name Plate or Maximum values will not work for this. Also the Efficiency will vary depending on the motor speed.

### 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.

### How many kilowatts per hour does a 3 horsepower motor use?

You don't use "kilowatts per hour". You use energy at the rate of some number of watts or kilowatts. 1 horsepower = 746 watts. If the motor is delivering energy at the rate of 3 horsepower, then that can be expressed as (3 x 746) = 2,238 watts. You might think that this is exactly how much power you have to put into the motor. But unfortunately, you always get less power out than what…

### How do you calculate the Volumetric efficiency of a hydraulic motor?

Dear friend, Drive the motor through a pump. Supply oil to achieve a given rpm and pressure. Some oil will come out of case drain port and some from the out put port of the motor. Measure the out put flow of the motor and input flow to the motor. out put by input will be the volumetric efficiency ( the loss is case drain ) ( alternatively, case drain and output flow fof the…

### How much power does a 1HP motor require?

The short answer is - one horse power, or 746 watts. But machines do not have 100% conversion efficiency so the electric power taken by a motor is more than the mechanical power output. Electric motors are made more efficient at the higher powers, so while a 1 HP motor might have an efficiency of 80%, a 10 HP motor might have an efficiency of 90% and a 100 Hp motor 97%. This is a…

### What is electrical efficiency?

Power output / Power input * 100 = %Efficiency For instance, 746 watts is equivalent to one horsepower. If an electric motor were 100% efficient, a 1HP motor would only draw 746 watts of electricity. Look in any motor catalog, and you will see that typical 1HP motors draw around 1100 watts. So: (746 / 1100) * 100 = 67.8% The example motor has a 68% electrical efficiency. You can apply the same formula to…

### Your engine is 400hp how many km per liter?

The answer to this question is hard as it is dependant upon: # Efficiency of engine and gear box. # Weight of car. # Aerodynamic resistance of car. These are the main contributors to vehicular efficiency, however other minor factors are: # Octane of petrol being used # Tyres being used: thin tyres are generally more efficient, but grip less # Manual or Automatic: Automatics have torque converters which max at 90% efficiency, or 100%…

### How do you convert hp to amp?

A motor's horsepower is its output power, which will be less than its input power, due to the efficiency of the machine. So, you need to know the efficiency to calculate the input power. To calculate the supply current then depends on whether it is a d.c. motor, a single-phase a.c. motor, or a three-phase a.c. motor. For a d.c. motor and a single-phase a.c. motor, you can determine the current from P=EI; for a…