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Armature Resistance of DC Generator using Output Voltage Formula

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

R a = \frac{V a - V o}{I a}

R_a - Armature Resistance?V_a - Armature Voltage?V_o - Output Voltage?I_a - Armature Current?

Armature Resistance of DC Generator using Output Voltage Example

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Here is how the Armature Resistance of DC Generator using Output Voltage equation looks like with Values.

Here is how the Armature Resistance of DC Generator using Output Voltage equation looks like with Units.

Here is how the Armature Resistance of DC Generator using Output Voltage equation looks like.

80 = \frac{200 - 140}{0.75}

80Ω = \frac{200V - 140V}{0.75A}

80 = \frac{200 - 140}{0.75}

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Armature Resistance of DC Generator using Output Voltage Solution

Follow our step by step solution on how to calculate Armature Resistance of DC Generator using Output Voltage?

FIRST Step Consider the formula

R a = \frac{V a - V o}{I a}

Next Step Substitute values of Variables

∴

R a = \frac{200V - 140V}{0.75A}

Next Step Prepare to Evaluate

∴

R a = \frac{200 - 140}{0.75}

LAST Step Evaluate

∴

R a = 80Ω

Armature Resistance of DC Generator using Output Voltage Formula Elements

Variables

Armature Resistance

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

Symbol: R_a

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Armature Resistance

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: V_a

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Armature Voltage

Output Voltage

Output Voltage is the electrical potential difference between the two terminals of the generator. Output Voltage is also called the Terminal Voltage.

Symbol: V_o

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Output Voltage

Armature Current

Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.

Symbol: I_a

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Armature Current

Other formulas in DC Generator Characteristics category

Go Converted Power in DC Generator

P conv = V o \cdot I L

Go Field Copper Loss in DC Generator

P cu = {I f}^{2} \cdot R f

Go Output Voltage in DC Generator using Converted Power

V o = \frac{P conv}{I L}

Go Back EMF of DC Generator given Flux

E = K e \cdot ω s \cdot Φ p

How to Evaluate Armature Resistance of DC Generator using Output Voltage?

Armature Resistance of DC Generator using Output Voltage evaluator uses Armature Resistance = (Armature Voltage-Output Voltage)/Armature Current to evaluate the Armature Resistance, The Armature Resistance of DC Generator using Output Voltage formula is defined as is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical generator. Armature Resistance is denoted by R_a symbol.

How to evaluate Armature Resistance of DC Generator using Output Voltage using this online evaluator? To use this online evaluator for Armature Resistance of DC Generator using Output Voltage, enter Armature Voltage (V_a), Output Voltage (V_o) & Armature Current (I_a) and hit the calculate button.

FAQs on Armature Resistance of DC Generator using Output Voltage

What is the formula to find Armature Resistance of DC Generator using Output Voltage?

The formula of Armature Resistance of DC Generator using Output Voltage is expressed as Armature Resistance = (Armature Voltage-Output Voltage)/Armature Current. Here is an example- 80 = (200-140)/0.75.

How to calculate Armature Resistance of DC Generator using Output Voltage?

With Armature Voltage (V_a), Output Voltage (V_o) & Armature Current (I_a) we can find Armature Resistance of DC Generator using Output Voltage using the formula - Armature Resistance = (Armature Voltage-Output Voltage)/Armature Current.

Can the Armature Resistance of DC Generator using Output Voltage be negative?

No, the Armature Resistance of DC Generator using Output Voltage, measured in Electric Resistance cannot be negative.

Which unit is used to measure Armature Resistance of DC Generator using Output Voltage?

Armature Resistance of DC Generator using Output 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 DC Generator using Output Voltage can be measured.

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Armature Resistance of DC Generator using Output Voltage Formula

Armature Resistance of DC Generator using Output Voltage Example

Armature Resistance of DC Generator using Output Voltage Solution

Armature Resistance of DC Generator using Output Voltage Formula Elements

Other formulas in DC Generator Characteristics category

How to Evaluate Armature Resistance of DC Generator using Output Voltage?

FAQs on Armature Resistance of DC Generator using Output Voltage

Variable Name