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Overall Efficiency of DC Motor Formula

GoOverall Efficiency of DC Motor given Input Power Formula

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Overall Efficiency Electrical is defined as the combined efficiency of all the systems inside and electrical machine. Check FAQs

η o = \frac{P m}{P in}

η_o - Overall Efficiency?P_m - Mechanical Power?P_in - Input Power?

Overall Efficiency of DC Motor Example

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

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

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

0.4615 = \frac{36}{78}

0.4615 = \frac{36W}{78W}

0.4615 = \frac{36}{78}

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Overall Efficiency of DC Motor Solution

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

FIRST Step Consider the formula

η o = \frac{P m}{P in}

Next Step Substitute values of Variables

∴

η o = \frac{36W}{78W}

Next Step Prepare to Evaluate

∴

η o = \frac{36}{78}

Next Step Evaluate

∴

η o = 0.461538461538462

LAST Step Rounding Answer

∴

η o = 0.4615

Overall Efficiency of DC Motor Formula Elements

Variables

Overall Efficiency

Overall Efficiency Electrical is defined as the combined efficiency of all the systems inside and electrical machine.

Symbol: η_o

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Overall Efficiency

Mechanical Power

Mechanical Power is the product of a force on an object and the object's velocity or the product of torque on a shaft and the shaft's angular velocity.

Symbol: P_m

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Mechanical Power

Input Power

Input Power is defined as the total power supplied to the electrical dc motor from the source which is connected to it.

Symbol: P_in

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Input Power

Other Formulas to find Overall Efficiency

Go Overall Efficiency of DC Motor given Input Power

η o = \frac{P in - (P cu(a) + P cu(f) + P loss)}{P in}

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 Overall Efficiency of DC Motor?

Overall Efficiency of DC Motor evaluator uses Overall Efficiency = Mechanical Power/Input Power to evaluate the Overall Efficiency, The Overall Efficiency of DC Motor formula is defined as the ratio of the mechanical output to the electrical input. Overall efficiency looks at the entire system from the initial input to the final output. Overall Efficiency is denoted by η_o symbol.

How to evaluate Overall Efficiency of DC Motor using this online evaluator? To use this online evaluator for Overall Efficiency of DC Motor, enter Mechanical Power (P_m) & Input Power (P_in) and hit the calculate button.

FAQs on Overall Efficiency of DC Motor

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

The formula of Overall Efficiency of DC Motor is expressed as Overall Efficiency = Mechanical Power/Input Power. Here is an example- 0.461538 = 36/78.

How to calculate Overall Efficiency of DC Motor?

With Mechanical Power (P_m) & Input Power (P_in) we can find Overall Efficiency of DC Motor using the formula - Overall Efficiency = Mechanical Power/Input Power.

What are the other ways to Calculate Overall Efficiency?

Here are the different ways to Calculate Overall Efficiency-

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

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Overall Efficiency of DC Motor Formula

​GoOverall Efficiency of DC Motor given Input Power Formula

Overall Efficiency of DC Motor Example

Overall Efficiency of DC Motor Solution

Overall Efficiency of DC Motor Formula Elements

Other Formulas to find Overall Efficiency

Other formulas in DC Motor Characteristics category

How to Evaluate Overall Efficiency of DC Motor?

FAQs on Overall Efficiency of DC Motor

Variable Name

GoOverall Efficiency of DC Motor given Input Power Formula