A three-phase induction motor's RPM can be calculated using a relatively simple mathematical formula. RPM is equal to (120 x frequency)/number of poles in the motor.
Continue ReadingFind the frequency of the motor in hertz. Most commercial motor operate at between 50 and 60 hertz. In addition, count the number of winding poles inside the motor.
Multiply the motor's frequency by the constant 120. Using the example of a motor that operates at 55 hertz, the result would be 120 x 55 = 6600.
Take the result of the first part of the equation and divide by the number of poles in the motor. If the motor in the above example had four poles, the solution would be 6600 / 4 = 1650 RPM.
Converting 185 pounds to kilograms requires using a conversion formula. One kilogram equals approximately 2.2 pounds, so dividing 185 pounds by 2.2 pounds per kilograms yields approximately 84 kilograms.
Full Answer >Body temperature in degrees Celsius can be converted to degrees Fahrenheit by using the formula F = C x 1.8 + 32, where "F" indicates the temperature in Fahrenheit and "C" denotes the temperature in Celsius. The normal body temperature, which is traditionally accepted as 37 C, is equivalent to 98.6 F.
Full Answer >The mathematical formula for mass is mass = density x volume. To calculate the mass of an object, you must first know its density and its volume.
Full Answer >The formula to change 121 pounds into kilograms is the quotient of the number of pounds divided by 2.2, as in the formula 121 pounds divided by 2.2 equals 54.88 kilograms. The formula is based on the equivalency of 2.2 pounds to 1 kilogram.
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