DC Motor Armature Mechanical Torque Formula & Calculator
 

DC motor armature mechanical torque (T_{m}) calculator  step by step calculation, formula & solved example problem to find the armature mechanical torque produced by an electrical DC motor. Field constant K_{a}, armature current I_{a} & (EMF) flux generated by the magnetic field φ are the key elements in this calculation.
Formula
The below mathematical formula is used in this calculator to find the armature mechanical torque (T_{m}) of an electrical DC motor
Solved Example
The below step by step solved example problem may helpful for users to understand how the input values are being used in such calculations to find the armature mechanical torque (T_{m}) of DC motor.
Example Problem
Find the armature mechanical torque (T_{m}) of a DC motor whose field constant K_{a} = 0.0025, armature current I_{a} = 0.75 amps & (EMF) flux generated by the magnetic field φ = 250 weber.
Solution
The given data
field constant K_{a} = 0.0025
EMF φ = 250 weber
I_{a} = 0.75 Amps
Step by step calculation
Formula to find T_{m} = (60 x K_{a} x I_{a} x φ)/2π
substitute the values in the above formula
= (60 x 0.0025 x 0.75 x 250)/2π
T_{m} = 4.476 newtonmeters
In the field of electrical engineering, while changing the armature current, field constant & EMF, it's required to calculate the armature mechanical torque of a DC motor. The above formula, step by step calculation & solved example problem may be useful for users to understand how the values are being used in the formula to find the armature mechanical torque (T_{m}), however, when it comes to online for quick calculations, this calculator helps the user to perform & verify such calculations as quick as possible.