Overall Efficiency of DC Motor given Input Power Calculator

✖Input Power is defined as the total power supplied to the electrical dc motor from the source which is connected to it.ⓘ Input Power [P_in]			+10% -10%
✖The armature copper loss is variable and depends upon the amount of loading of the machine.ⓘ Armature Copper Loss [P_cu(a)]			+10% -10%
✖Field Copper Losses is variable and depends upon the amount of loading of the machine.ⓘ Field Copper Losses [P_cu(f)]			+10% -10%
✖Power Loss is the loss of the electrical power network supply to an end user.ⓘ Power Loss [P_loss]			+10% -10%

✖Overall Efficiency Electrical is defined as the combined efficiency of all the systems inside and electrical machine.ⓘ Overall Efficiency of DC Motor given Input Power [η_o]

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Formula

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Overall Efficiency of DC Motor given Input Power

Formula

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

Example

0.417949 = \frac{78 W - (1.25 W + 2.81 W + 41.34 W)}{78 W}

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Overall Efficiency of DC Motor given Input Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power
η_o = (P_in-(P_cu(a)+P_cu(f)+P_loss))/P_in
This formula uses 5 Variables

Variables Used

Overall Efficiency - Overall Efficiency Electrical is defined as the combined efficiency of all the systems inside and electrical machine.
Input Power - (Measured in Watt) - Input Power is defined as the total power supplied to the electrical dc motor from the source which is connected to it.
Armature Copper Loss - (Measured in Watt) - The armature copper loss is variable and depends upon the amount of loading of the machine.
Field Copper Losses - (Measured in Watt) - Field Copper Losses is variable and depends upon the amount of loading of the machine.
Power Loss - (Measured in Watt) - Power Loss is the loss of the electrical power network supply to an end user.

STEP 1: Convert Input(s) to Base Unit

Input Power: 78 Watt --> 78 Watt No Conversion Required
Armature Copper Loss: 1.25 Watt --> 1.25 Watt No Conversion Required
Field Copper Losses: 2.81 Watt --> 2.81 Watt No Conversion Required
Power Loss: 41.34 Watt --> 41.34 Watt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_o = (P_in-(P_cu(a)+P_cu(f)+P_loss))/P_in --> (78-(1.25+2.81+41.34))/78

Evaluating ... ...

η_o = 0.417948717948718

STEP 3: Convert Result to Output's Unit

0.417948717948718 --> No Conversion Required

FINAL ANSWER

0.417948717948718 ≈ 0.417949 <-- Overall Efficiency

(Calculation completed in 00.020 seconds)

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< DC Motor Characteristics Calculators

Machine Construction Constant of DC Motor

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

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)

Overall Efficiency of DC Motor given Input Power Formula

Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power
η_o = (P_in-(P_cu(a)+P_cu(f)+P_loss))/P_in

What is a DC shunt motor?

A DC shunt motor is a type of self-excited DC motor, and it is also known as a shunt wound DC motor. The field windings in this motor can be connected in parallel to the armature winding.

How to Calculate Overall Efficiency of DC Motor given Input Power?

Overall Efficiency of DC Motor given Input Power calculator uses Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power to calculate the Overall Efficiency, The Overall Efficiency of DC Motor given Input Power is defined as the ratio of the mechanical output to the electrical input. Overall efficiency looks at entire system from the initial input to the final output. Overall Efficiency is denoted by η_o symbol.

How to calculate Overall Efficiency of DC Motor given Input Power using this online calculator? To use this online calculator for Overall Efficiency of DC Motor given Input Power, enter Input Power (P_in), Armature Copper Loss (P_cu(a)), Field Copper Losses (P_cu(f)) & Power Loss (P_loss) and hit the calculate button. Here is how the Overall Efficiency of DC Motor given Input Power calculation can be explained with given input values -> 0.744103 = (78-(1.25+2.81+41.34))/78.

FAQ

What is Overall Efficiency of DC Motor given Input Power?

The Overall Efficiency of DC Motor given Input Power is defined as the ratio of the mechanical output to the electrical input. Overall efficiency looks at entire system from the initial input to the final output and is represented as η_o = (P_in-(P_cu(a)+P_cu(f)+P_loss))/P_in or Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power. Input Power is defined as the total power supplied to the electrical dc motor from the source which is connected to it, The armature copper loss is variable and depends upon the amount of loading of the machine, Field Copper Losses is variable and depends upon the amount of loading of the machine & Power Loss is the loss of the electrical power network supply to an end user.

How to calculate Overall Efficiency of DC Motor given Input Power?

The Overall Efficiency of DC Motor given Input Power is defined as the ratio of the mechanical output to the electrical input. Overall efficiency looks at entire system from the initial input to the final output is calculated using Overall Efficiency = (Input Power-(Armature Copper Loss+Field Copper Losses+Power Loss))/Input Power. To calculate Overall Efficiency of DC Motor given Input Power, you need Input Power (P_in), Armature Copper Loss (P_cu(a)), Field Copper Losses (P_cu(f)) & Power Loss (P_loss). With our tool, you need to enter the respective value for Input Power, Armature Copper Loss, Field Copper Losses & Power Loss and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Overall Efficiency?

In this formula, Overall Efficiency uses Input Power, Armature Copper Loss, Field Copper Losses & Power Loss. We can use 1 other way(s) to calculate the same, which is/are as follows -

Overall Efficiency = Mechanical Power/Input Power

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