# How do you calculate motor output?

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By taking the voltage and multiplying it by the associated current, the power can be determined. A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A.

## What is the formula of motor?

Electric Motor Formula

TO FIND DIRECT CURRENT SINGLE PHASE
HORSE POWER V x I x EFF 746 V x I x EFF x PF 746
CURRENT P V x EFF P V x EFF x PF
EFFICIENCY 746 x HP V x I 746 x HP V x I x PF
POWER FACTOR —— Input Watts V x I

## What is the formula for calculating current?

Current is usually denoted by the symbol I. Ohm’s law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm’s law is I = V/R.

## How do you calculate efficiency output?

The work efficiency formula is efficiency = output / input, and you can multiply the result by 100 to get work efficiency as a percentage.

## What is slip formula?

If the revolving magnetic flux’s synchronous speed & the speed of rotor are Ns & Nr in the motor, then the speed among them can be equivalent to (Ns – Nr). So, slip can be determined as. S = (Ns – Nr) / Ns.

## What is synchronous speed and it’s formula?

The synchronous speed of an AC motor is determined by the frequency of the source and the number of poles. The RPM is calculated by multiplying the frequency times 60 and dividing by the number of pairs of poles. Some motors are designed to operate at synchronous speed. …

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