Field Current Solution

STEP 0: Pre-Calculation Summary
Formula Used
Field Current = Field Coil Voltage/Field Resistance
If = Ef/Rf
This formula uses 3 Variables
Variables Used
Field Current - (Measured in Ampere) - Field current determines the strength of the magnetic field that induces the voltage in the armature winding.
Field Coil Voltage - (Measured in Volt) - The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor.
Field Resistance - (Measured in Ohm) - Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.
STEP 1: Convert Input(s) to Base Unit
Field Coil Voltage: 42.5 Volt --> 42.5 Volt No Conversion Required
Field Resistance: 0.51 Ohm --> 0.51 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
If = Ef/Rf --> 42.5/0.51
Evaluating ... ...
If = 83.3333333333333
STEP 3: Convert Result to Output's Unit
83.3333333333333 Ampere --> No Conversion Required
FINAL ANSWER
83.3333333333333 83.33333 Ampere <-- Field Current
(Calculation completed in 00.004 seconds)

Credits

Created by swapanshil kumar
ramgarh engineering college (REC), ramgarh
swapanshil kumar has created this Calculator and 25+ more calculators!
Verified by Parminder Singh
Chandigarh University (CU), Punjab
Parminder Singh has verified this Calculator and 600+ more calculators!

13 Electrical Parameters Calculators

Specific Electric Loading
Go Specific Electric Loading = (Armature Current*Number of Conductors)/(pi*Number of Parallel Paths*Armature Diameter)
Output Coefficient using Output Equation
Go Output Coefficient AC = Output Power/(Armature Core Length*Armature Diameter^2*Synchronous Speed*1000)
Synchronous Speed using Output Equation
Go Synchronous Speed = Output Power/(Output Coefficient AC*1000*Armature Diameter^2*Armature Core Length)
Output Power of Synchronous Machine
Go Output Power = Output Coefficient AC*1000*Armature Diameter^2*Armature Core Length*Synchronous Speed
Field Resistance
Go Field Resistance = (Turns per Coil*Resistivity*Length of Mean Turn)/Area of Field Conductor
Specific Electric Loading using Output Coefficient AC
Go Specific Electric Loading = (Output Coefficient AC*1000)/(11*Specific Magnetic Loading*Winding Factor)
Winding Factor using Output Coefficient AC
Go Winding Factor = (Output Coefficient AC*1000)/(11*Specific Magnetic Loading*Specific Electric Loading)
Current per Phase
Go Current per Phase = (Apparent Power*1000)/(Induced Emf per Phase*3)
Current in Conductor
Go Current in Conductor = Current per Phase/Number of Parallel Paths
Field Coil Voltage
Go Field Coil Voltage = Field Current*Field Resistance
Field Current
Go Field Current = Field Coil Voltage/Field Resistance
Apparent Power
Go Apparent Power = Rated Real Power/Power Factor
Short Circuit Ratio
Go Short Circuit Ratio = 1/Synchronous Reactance

Field Current Formula

Field Current = Field Coil Voltage/Field Resistance
If = Ef/Rf

What is field current in DC generator?

The magnetic flux in a DC machine is produced by the field coils carry current. The circulating current in the field windings produces a magnetic flux, and the phenomenon is known as Excitation.

What is the relationship between the armature current and the field current?

Since you specified a DC machine, field current and armature current must be equal, as all current across elements of a SERIES circuit is constant and not divided as it is in a parallel circuit. That is to say that as current increases in the DC machine, both field and armature current increase equally.

How to Calculate Field Current?

Field Current calculator uses Field Current = Field Coil Voltage/Field Resistance to calculate the Field Current, The Field current is the current flowing through the windings in the non-moving part of the machine, which is responsible for the production of magnetic field. The field current formula is used to calculate the current required for the field coil of an electrical machine, such as a generator or motor. The field coil current is responsible for producing the magnetic field necessary for the operation of the machine. The specific formula for field current may vary depending on the machine's characteristics and design requirements. Field Current is denoted by If symbol.

How to calculate Field Current using this online calculator? To use this online calculator for Field Current, enter Field Coil Voltage (Ef) & Field Resistance (Rf) and hit the calculate button. Here is how the Field Current calculation can be explained with given input values -> 83.33333 = 42.5/0.51.

FAQ

What is Field Current?
The Field current is the current flowing through the windings in the non-moving part of the machine, which is responsible for the production of magnetic field. The field current formula is used to calculate the current required for the field coil of an electrical machine, such as a generator or motor. The field coil current is responsible for producing the magnetic field necessary for the operation of the machine. The specific formula for field current may vary depending on the machine's characteristics and design requirements and is represented as If = Ef/Rf or Field Current = Field Coil Voltage/Field Resistance. The field coil voltage refers to the voltage applied to the field winding or field coil of a rotating machine, such as a generator or motor & Field resistance refers to the electrical resistance of the field winding or field coil in a machine such as a generator or motor.
How to calculate Field Current?
The Field current is the current flowing through the windings in the non-moving part of the machine, which is responsible for the production of magnetic field. The field current formula is used to calculate the current required for the field coil of an electrical machine, such as a generator or motor. The field coil current is responsible for producing the magnetic field necessary for the operation of the machine. The specific formula for field current may vary depending on the machine's characteristics and design requirements is calculated using Field Current = Field Coil Voltage/Field Resistance. To calculate Field Current, you need Field Coil Voltage (Ef) & Field Resistance (Rf). With our tool, you need to enter the respective value for Field Coil Voltage & Field Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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