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Mechanical Efficiency of DC Motor Formula

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Mechanical Efficiency the ratio of the power delivered by a mechanical system to the power supplied to it. Check FAQs

η m = \frac{τ a}{τ}

η_m - Mechanical Efficiency?τ_a - Armature Torque?τ - Motor Torque?

Mechanical Efficiency of DC Motor Example

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Here is how the Mechanical Efficiency of DC Motor equation looks like with Values.

Here is how the Mechanical Efficiency of DC Motor equation looks like with Units.

Here is how the Mechanical Efficiency of DC Motor equation looks like.

0.6006 = \frac{0.424}{0.706}

0.6006 = \frac{0.424N*m}{0.706N*m}

0.6006 = \frac{0.424}{0.706}

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Mechanical Efficiency of DC Motor Solution

Follow our step by step solution on how to calculate Mechanical Efficiency of DC Motor?

FIRST Step Consider the formula

η m = \frac{τ a}{τ}

Next Step Substitute values of Variables

∴

η m = \frac{0.424N*m}{0.706N*m}

Next Step Prepare to Evaluate

∴

η m = \frac{0.424}{0.706}

Next Step Evaluate

∴

η m = 0.60056657223796

LAST Step Rounding Answer

∴

η m = 0.6006

Mechanical Efficiency of DC Motor Formula Elements

Variables

Mechanical Efficiency

Mechanical Efficiency the ratio of the power delivered by a mechanical system to the power supplied to it.

Symbol: η_m

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Mechanical Efficiency

Armature Torque

Armature Torque is defined as the electric torque induced by the armature winding in a dc motor.

Symbol: τ_a

Measurement: TorqueUnit: N*m

Note: Value can be positive or negative.

Formulas to find Armature Torque

Motor Torque

Motor Torque is defined as a measure of the force that causes the rotor of an electrical machine to rotate about an axis.

Symbol: τ

Measurement: TorqueUnit: N*m

Note: Value should be greater than 0.

Formulas to find Motor Torque

Other formulas in DC Motor Characteristics category

Go Machine Construction Constant of DC Motor

K f = \frac{V s - I a \cdot R a}{Φ \cdot N}

Go Back EMF Equation of DC Motor

E b = \frac{n \cdot Φ \cdot Z \cdot N}{60 \cdot n ||}

Go Supply Voltage given Electrical Efficiency of DC Motor

V s = \frac{ω s \cdot τ a}{I a \cdot η e}

Go Armature Current given Electrical Efficiency of DC Motor

I a = \frac{ω s \cdot τ a}{V s \cdot η e}

How to Evaluate Mechanical Efficiency of DC Motor?

Mechanical Efficiency of DC Motor evaluator uses Mechanical Efficiency = Armature Torque/Motor Torque to evaluate the Mechanical Efficiency, The Mechanical Efficiency of DC Motor formula is defined as the ratio of the power delivered by a mechanical system to the power supplied to it. Mechanical Efficiency is denoted by η_m symbol.

How to evaluate Mechanical Efficiency of DC Motor using this online evaluator? To use this online evaluator for Mechanical Efficiency of DC Motor, enter Armature Torque (τ_a) & Motor Torque (τ) and hit the calculate button.

FAQs on Mechanical Efficiency of DC Motor

What is the formula to find Mechanical Efficiency of DC Motor?

The formula of Mechanical Efficiency of DC Motor is expressed as Mechanical Efficiency = Armature Torque/Motor Torque. Here is an example- 0.362393 = 0.424/0.706.

How to calculate Mechanical Efficiency of DC Motor?

With Armature Torque (τ_a) & Motor Torque (τ) we can find Mechanical Efficiency of DC Motor using the formula - Mechanical Efficiency = Armature Torque/Motor Torque.

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