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Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor. Check FAQs
Ia=Va-VtRse+Ra
Ia - Armature Current?Va - Armature Voltage?Vt - Terminal Voltage?Rse - Series Field Resistance?Ra - Armature Resistance?

Armature Current of Series DC Generator using Terminal Voltage Example

With values
With units
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Here is how the Armature Current of Series DC Generator using Terminal Voltage equation looks like with Values.

Here is how the Armature Current of Series DC Generator using Terminal Voltage equation looks like with Units.

Here is how the Armature Current of Series DC Generator using Terminal Voltage equation looks like.

0.66Edit=275Edit-170Edit123.5Edit+35.58Edit
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Armature Current of Series DC Generator using Terminal Voltage Solution

Follow our step by step solution on how to calculate Armature Current of Series DC Generator using Terminal Voltage?

FIRST Step Consider the formula
Ia=Va-VtRse+Ra
Next Step Substitute values of Variables
Ia=275V-170V123.5Ω+35.58Ω
Next Step Prepare to Evaluate
Ia=275-170123.5+35.58
Next Step Evaluate
Ia=0.660045260246417A
LAST Step Rounding Answer
Ia=0.66A

Armature Current of Series DC Generator using Terminal Voltage Formula Elements

Variables
Armature Current
Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.
Symbol: Ia
Measurement: Electric CurrentUnit: A
Note: Value should be greater than 0.
Armature Voltage
Armature Voltage is defined as voltage developed at the terminals of the armature winding of an AC or DC machine during the generation of power.
Symbol: Va
Measurement: Electric PotentialUnit: V
Note: Value should be greater than 0.
Terminal Voltage
Terminal Voltage, electric pressure or electric tension is the difference in electric potential between two points in electrical machines.
Symbol: Vt
Measurement: Electric PotentialUnit: V
Note: Value should be greater than 0.
Series Field Resistance
Series field resistance refers to the electrical resistance of the field winding in a series-wound DC motor or generator.
Symbol: Rse
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.
Armature Resistance
Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical generator.
Symbol: Ra
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.

Other Formulas to find Armature Current

​Go Armature Current of Series DC Generator given Output Power
Ia=Pconv-PoutRa
​Go Armature Current of Series DC Generator given Torque
Ia=τωsVa

Other formulas in Current category

​Go Load Current of Series DC Generator given Output Power
IL=PoutVt
​Go Load Current of Series DC Generator given Load Power
IL=PLVt

How to Evaluate Armature Current of Series DC Generator using Terminal Voltage?

Armature Current of Series DC Generator using Terminal Voltage evaluator uses Armature Current = (Armature Voltage-Terminal Voltage)/(Series Field Resistance+Armature Resistance) to evaluate the Armature Current, The Armature Current of Series DC Generator using Terminal Voltage formula is defined as the current that is flowing in the armature winding of the series DC generator. Armature Current is denoted by Ia symbol.

How to evaluate Armature Current of Series DC Generator using Terminal Voltage using this online evaluator? To use this online evaluator for Armature Current of Series DC Generator using Terminal Voltage, enter Armature Voltage (Va), Terminal Voltage (Vt), Series Field Resistance (Rse) & Armature Resistance (Ra) and hit the calculate button.

FAQs on Armature Current of Series DC Generator using Terminal Voltage

What is the formula to find Armature Current of Series DC Generator using Terminal Voltage?
The formula of Armature Current of Series DC Generator using Terminal Voltage is expressed as Armature Current = (Armature Voltage-Terminal Voltage)/(Series Field Resistance+Armature Resistance). Here is an example- 0.660045 = (275-170)/(123.5+35.58).
How to calculate Armature Current of Series DC Generator using Terminal Voltage?
With Armature Voltage (Va), Terminal Voltage (Vt), Series Field Resistance (Rse) & Armature Resistance (Ra) we can find Armature Current of Series DC Generator using Terminal Voltage using the formula - Armature Current = (Armature Voltage-Terminal Voltage)/(Series Field Resistance+Armature Resistance).
What are the other ways to Calculate Armature Current?
Here are the different ways to Calculate Armature Current-
  • Armature Current=sqrt((Converted Power-Output Power)/Armature Resistance)OpenImg
  • Armature Current=(Torque*Angular Speed)/Armature VoltageOpenImg
Can the Armature Current of Series DC Generator using Terminal Voltage be negative?
No, the Armature Current of Series DC Generator using Terminal Voltage, measured in Electric Current cannot be negative.
Which unit is used to measure Armature Current of Series DC Generator using Terminal Voltage?
Armature Current of Series DC Generator using Terminal Voltage 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 of Series DC Generator using Terminal Voltage can be measured.
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