FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Armature Resistance of Shunt DC Motor given Voltage Formula

Fx Copy

LaTeX Copy

The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor. Check FAQs

R a = \frac{V sp - E b}{I a}

R_a - Armature Resistance?V_sp - Supply Voltage?E_b - Back EMF?I_a - Armature Current?

Armature Resistance of Shunt DC Motor given Voltage Example

With values

With units

Only example

Here is how the Armature Resistance of Shunt DC Motor given Voltage equation looks like with Values.

Here is how the Armature Resistance of Shunt DC Motor given Voltage equation looks like with Units.

Here is how the Armature Resistance of Shunt DC Motor given Voltage equation looks like.

2.1622 = \frac{239 - 231}{3.7}

2.1622Ω = \frac{239V - 231V}{3.7A}

2.1622 = \frac{239 - 231}{3.7}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Machine » fx Armature Resistance of Shunt DC Motor given Voltage

Armature Resistance of Shunt DC Motor given Voltage Solution

Follow our step by step solution on how to calculate Armature Resistance of Shunt DC Motor given Voltage?

FIRST Step Consider the formula

R a = \frac{V sp - E b}{I a}

Next Step Substitute values of Variables

∴

R a = \frac{239V - 231V}{3.7A}

Next Step Prepare to Evaluate

∴

R a = \frac{239 - 231}{3.7}

Next Step Evaluate

∴

R a = 2.16216216216216Ω

LAST Step Rounding Answer

∴

R a = 2.1622Ω

Armature Resistance of Shunt DC Motor given Voltage Formula Elements

Variables

Armature Resistance

The Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical dc motor.

Symbol: R_a

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Armature Resistance

Supply Voltage

Supply Voltage is the input voltage being fed to the dc motor circuit. Supply voltage refers to the electrical voltage provided to an electrical device or system, such as an electric motor.

Symbol: V_sp

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Supply Voltage

Back EMF

The Back emf opposes the current which causes it in any dc machine. Back emf refers to the voltage that is generated in an inductor or a coil of wire when the current flowing through it changes.

Symbol: E_b

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Back EMF

Armature Current

Armature Current DC motor is defined as the armature current developed in an electrical dc motor due to the rotation of rotor.

Symbol: I_a

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Armature Current

Other formulas in Resistance category

Go Shunt Field Resistance of Shunt DC Motor given Shunt Field Current

R sh = \frac{V sp}{I sh}

How to Evaluate Armature Resistance of Shunt DC Motor given Voltage?

Armature Resistance of Shunt DC Motor given Voltage evaluator uses Armature Resistance = (Supply Voltage-Back EMF)/Armature Current to evaluate the Armature Resistance, The Armature Resistance of Shunt DC Motor given Voltage formula is defined as the resistance of the armature winding of the shunt DC motor. Armature Resistance is denoted by R_a symbol.

How to evaluate Armature Resistance of Shunt DC Motor given Voltage using this online evaluator? To use this online evaluator for Armature Resistance of Shunt DC Motor given Voltage, enter Supply Voltage (V_sp), Back EMF (E_b) & Armature Current (I_a) and hit the calculate button.

FAQs on Armature Resistance of Shunt DC Motor given Voltage

What is the formula to find Armature Resistance of Shunt DC Motor given Voltage?

The formula of Armature Resistance of Shunt DC Motor given Voltage is expressed as Armature Resistance = (Supply Voltage-Back EMF)/Armature Current. Here is an example- 1.891892 = (239-231)/3.7.

How to calculate Armature Resistance of Shunt DC Motor given Voltage?

With Supply Voltage (V_sp), Back EMF (E_b) & Armature Current (I_a) we can find Armature Resistance of Shunt DC Motor given Voltage using the formula - Armature Resistance = (Supply Voltage-Back EMF)/Armature Current.

Can the Armature Resistance of Shunt DC Motor given Voltage be negative?

No, the Armature Resistance of Shunt DC Motor given Voltage, measured in Electric Resistance cannot be negative.

Which unit is used to measure Armature Resistance of Shunt DC Motor given Voltage?

Armature Resistance of Shunt DC Motor given Voltage is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Armature Resistance of Shunt DC Motor given Voltage can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit