Magnetic Flux of DC Motor Calculator

✖Supply Voltage is the input voltage being fed to the dc motor circuit.ⓘ Supply Voltage [V_s]			+10% -10%
✖Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor.ⓘ Armature Current [I_a]			+10% -10%
✖The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor.ⓘ Armature Resistance [R_a]			+10% -10%
✖Constant of Machine construction is a constant term which is calculated separately to a make calculation less complex.ⓘ Constant of Machine Construction [K_f]			+10% -10%
✖Motor Speed is the speed of the rotor(motor).ⓘ Motor Speed [N]			+10% -10%

✖Magnetic flux (Φ) is the number of magnetic field lines passing through the magnetic core of an electrical dc motor.ⓘ Magnetic Flux of DC Motor [Φ]

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Formula

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Magnetic Flux of DC Motor

Formula

`"Φ" = ("V"_{"s"}-"I"_{"a"}*"R"_{"a"})/("K"_{"f"}*"N")`

Example

`"1.187539Wb"=("240V"-"0.724A"*"80Ω")/("1.135"*"1290rev/min")`

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Magnetic Flux of DC Motor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed)
Φ = (V_s-I_a*R_a)/(K_f*N)
This formula uses 6 Variables

Variables Used

Magnetic Flux - (Measured in Weber) - Magnetic flux (Φ) is the number of magnetic field lines passing through the magnetic core of an electrical dc motor.
Supply Voltage - (Measured in Volt) - Supply Voltage is the input voltage being fed to the dc motor circuit.
Armature Current - (Measured in Ampere) - Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor.
Armature Resistance - (Measured in Ohm) - The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor.
Constant of Machine Construction - Constant of Machine construction is a constant term which is calculated separately to a make calculation less complex.
Motor Speed - (Measured in Radian per Second) - Motor Speed is the speed of the rotor(motor).

STEP 1: Convert Input(s) to Base Unit

Supply Voltage: 240 Volt --> 240 Volt No Conversion Required
Armature Current: 0.724 Ampere --> 0.724 Ampere No Conversion Required
Armature Resistance: 80 Ohm --> 80 Ohm No Conversion Required
Constant of Machine Construction: 1.135 --> No Conversion Required
Motor Speed: 1290 Revolution per Minute --> 135.088484097482 Radian per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Φ = (V_s-I_a*R_a)/(K_f*N) --> (240-0.724*80)/(1.135*135.088484097482)

Evaluating ... ...

Φ = 1.18753947503936

STEP 3: Convert Result to Output's Unit

1.18753947503936 Weber --> No Conversion Required

FINAL ANSWER

1.18753947503936 ≈ 1.187539 Weber <-- Magnetic Flux

(Calculation completed in 00.004 seconds)

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< 25 DC Motor Characteristics Calculators

Supply Voltage given Overall Efficiency of DC Motor

Go Supply Voltage = ((Electric Current-Shunt Field Current)^2*Armature Resistance+Mechanical Losses+Core Losses)/(Electric Current*(1-Overall Efficiency))

Machine Construction Constant of DC Motor

Go Constant of Machine Construction = (Supply Voltage-Armature Current*Armature Resistance)/(Magnetic Flux*Motor Speed)

Motor Speed of DC Motor given Flux

Go Motor Speed = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Magnetic Flux)

Magnetic Flux of DC Motor

Go Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed)

Back EMF Equation of DC Motor

Go Back EMF = (Number of Poles*Magnetic Flux*Number of Conductors*Motor Speed)/(60*Number of Parallel Paths)

Motor Speed of DC Motor

Go Motor Speed = (60*Number of Parallel Paths*Back EMF)/(Number of Conductors*Number of Poles*Magnetic Flux)

Overall Efficiency of DC Motor given Input Power

Go Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power

Armature Current of DC Motor

Go Armature Current = Armature Voltage/(Constant of Machine Construction*Magnetic Flux*Angular Speed)

Armature Current given Electrical Efficiency of DC Motor

Go Armature Current = (Angular Speed*Armature Torque)/(Supply Voltage*Electrical Efficiency)

Supply Voltage given Electrical Efficiency of DC Motor

Go Supply Voltage = (Angular Speed*Armature Torque)/(Armature Current*Electrical Efficiency)

Electrical Efficiency of DC Motor

Go Electrical Efficiency = (Armature Torque*Angular Speed)/(Supply Voltage*Armature Current)

Armature Torque given Electrical Efficiency of DC Motor

Go Armature Torque = (Armature Current*Supply Voltage*Electrical Efficiency)/Angular Speed

Angular Speed given Electrical Efficiency of DC Motor

Go Angular Speed = (Electrical Efficiency*Supply Voltage*Armature Current)/Armature Torque

Mechanical Power Developed in DC Motor given Input Power

Go Mechanical Power = Input Power-(Armature Current^2*Armature Resistance)

Total Power Loss given Overall Efficiency of DC Motor

Go Power Loss = Input Power-Overall Efficiency*Input Power

Armature Torque given Mechanical Efficiency of DC Motor

Go Armature Torque = Mechanical Efficiency*Motor Torque

Motor Torque given Mechanical Efficiency of DC Motor

Go Motor Torque = Armature Torque/Mechanical Efficiency

Mechanical Efficiency of DC Motor

Go Mechanical Efficiency = Armature Torque/Motor Torque

Converted Power given Electrical Efficiency of DC Motor

Go Converted Power = Electrical Efficiency*Input Power

Input Power given Electrical Efficiency of DC Motor

Go Input Power = Converted Power/Electrical Efficiency

Overall Efficiency of DC Motor

Go Overall Efficiency = Mechanical Power/Input Power

Output Power given Overall Efficiency of DC Motor

Go Output Power = Input Power*Overall Efficiency

Core Loss given Mechanical Loss of DC Motor

Go Core Losses = Constant Loss-Mechanical Losses

Constant Losses given Mechanical Loss

Go Constant Loss = Core Losses+Mechanical Losses

DC Motor Frequency given Speed

Go Frequency = (Number of Poles*Motor Speed)/120

Magnetic Flux of DC Motor Formula

Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed)
Φ = (V_s-I_a*R_a)/(K_f*N)

What are the characteristics of dc generator?

In generator, one part is the armature current flows through shunt field winding and the other part through the load current. The curve is drawn between the shunt field current and the no-load voltage. The characteristics of DC shunt generator are determined by plotting the curve between field current on X - axis and No - load voltage on Y - axis.

How to Calculate Magnetic Flux of DC Motor?

Magnetic Flux of DC Motor calculator uses Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed) to calculate the Magnetic Flux, Magnetic Flux of DC Motor is defined as the number of magnetic field lines (also called "magnetic flux density") passing through a surface (such as a loop of wire). Magnetic Flux is denoted by Φ symbol.

How to calculate Magnetic Flux of DC Motor using this online calculator? To use this online calculator for Magnetic Flux of DC Motor, enter Supply Voltage (V_s), Armature Current (I_a), Armature Resistance (R_a), Constant of Machine Construction (K_f) & Motor Speed (N) and hit the calculate button. Here is how the Magnetic Flux of DC Motor calculation can be explained with given input values -> 1.187539 = (240-0.724*80)/(1.135*135.088484097482).

FAQ

What is Magnetic Flux of DC Motor?

Magnetic Flux of DC Motor is defined as the number of magnetic field lines (also called "magnetic flux density") passing through a surface (such as a loop of wire) and is represented as Φ = (V_s-I_a*R_a)/(K_f*N) or Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed). Supply Voltage is the input voltage being fed to the dc motor circuit, Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor, The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor, Constant of Machine construction is a constant term which is calculated separately to a make calculation less complex & Motor Speed is the speed of the rotor(motor).

How to calculate Magnetic Flux of DC Motor?

Magnetic Flux of DC Motor is defined as the number of magnetic field lines (also called "magnetic flux density") passing through a surface (such as a loop of wire) is calculated using Magnetic Flux = (Supply Voltage-Armature Current*Armature Resistance)/(Constant of Machine Construction*Motor Speed). To calculate Magnetic Flux of DC Motor, you need Supply Voltage (V_s), Armature Current (I_a), Armature Resistance (R_a), Constant of Machine Construction (K_f) & Motor Speed (N). With our tool, you need to enter the respective value for Supply Voltage, Armature Current, Armature Resistance, Constant of Machine Construction & Motor Speed 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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