Armature Current in DC Machines Formulas

Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor. And is denoted by I_a. Armature Current is usually measured using the Ampere for Electric Current. Note that the value of Armature Current is always negative.

DC Machines formulas that make use of Armature Current

fxAngular Speed of DC Machine using KfGo

fxTorque generated in DC MachineGo

fxMagnetic Flux of DC Machine given TorqueGo

fxArmature Induced Voltage of DC Machine given KfGo

fxInput Power of DC MotorGo

fxElectrical Efficiency of DC MachineGo

fxMechanical Efficiency given Induced Voltage and Armature CurrentGo

fxBack EMF of DC GeneratorGo

FAQ

What is the Armature Current?

Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor. Armature Current is usually measured using the Ampere for Electric Current. Note that the value of Armature Current is always negative.

Can the Armature Current be negative?

Yes, the Armature Current, measured in Electric Current can be negative.

What unit is used to measure Armature Current?

Armature Current is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Armature Current can be measured.

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