Efficiency of Transformer Calculator

✖Output power is the power delivered to the load after losses.ⓘ Output Power [P_out]			+10% -10%
✖Input power. Means the product of the direct voltage applied to the last radio stage and the total direct current flowing to the last radio stage, measured without modulation.ⓘ Input Power [P_in]			+10% -10%

✖Efficiency can be defined as the ability to achieve an end goal with little to no waste, effort, or energy.ⓘ Efficiency of Transformer [η]

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Formula

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Efficiency of Transformer

Formula

`"η" = "P"_{"out"}/"P"_{"in"}`

Example

`"0.888889"="120kW"/"135kW"`

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Efficiency of Transformer Solution

STEP 0: Pre-Calculation Summary

Formula Used

Efficiency = Output Power/Input Power
η = P_out/P_in
This formula uses 3 Variables

Variables Used

Efficiency - Efficiency can be defined as the ability to achieve an end goal with little to no waste, effort, or energy.
Output Power - (Measured in Watt) - Output power is the power delivered to the load after losses.
Input Power - (Measured in Watt) - Input power. Means the product of the direct voltage applied to the last radio stage and the total direct current flowing to the last radio stage, measured without modulation.

STEP 1: Convert Input(s) to Base Unit

Output Power: 120 Kilowatt --> 120000 Watt (Check conversion here)
Input Power: 135 Kilowatt --> 135000 Watt (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η = P_out/P_in --> 120000/135000

Evaluating ... ...

η = 0.888888888888889

STEP 3: Convert Result to Output's Unit

0.888888888888889 --> No Conversion Required

FINAL ANSWER

0.888888888888889 ≈ 0.888889 <-- Efficiency

(Calculation completed in 00.008 seconds)

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Credits

Created by Jaffer Ahmad Khan

College Of Engineering, Pune (COEP), Pune

Jaffer Ahmad Khan has created this Calculator and 10+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 600+ more calculators!

< 25 Transformer Circuit Calculators

EMF Induced in Secondary Winding

Go EMF Induced in Secondary = 4.44*Number of Turns in Secondary*Supply Frequency*Area of Core*Maximum Flux Density

EMF Induced in Primary Winding

Go EMF Induced in Primary = 4.44*Number of Turns in Primary*Supply Frequency*Area of Core*Maximum Flux Density

Equivalent Impedance of Transformer from Secondary Side

Go Equivalent Impedance from Secondary = sqrt(Equivalent Resistance from Secondary^2+Equivalent Reactance from Secondary^2)

Equivalent Impedance of Transformer from Primary Side

Go Equivalent Impedance from Primary = sqrt(Equivalent Resistance from Primary^2+Equivalent Reactance from Primary^2)

Equivalent Resistance from Secondary Side

Go Equivalent Resistance from Secondary = Resistance of Secondary+Resistance of Primary*Transformation Ratio^2

Equivalent Resistance from Primary Side

Go Equivalent Resistance from Primary = Resistance of Primary+Resistance of Secondary/Transformation Ratio^2

P.U. Primary Resistance Drop

Go P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary

Terminal Voltage during No Load

Go No Load Terminal Voltage = (Primary Voltage*Number of Turns in Secondary)/Number of Turns in Primary

Transformation Ratio given Secondary Leakage Reactance

Go Transformation Ratio = sqrt(Secondary Leakage Reactance/Reactance of Secondary in Primary)

Transformation Ratio given Primary Leakage Reactance

Go Transformation Ratio = sqrt(Reactance of Primary in Secondary/Primary Leakage Reactance)

Equivalent Reactance of Transformer from Secondary Side

Go Equivalent Reactance from Secondary = Secondary Leakage Reactance+Reactance of Primary in Secondary

Equivalent Reactance of Transformer from Primary Side

Go Equivalent Reactance from Primary = Primary Leakage Reactance+Reactance of Secondary in Primary

Reactance of Secondary Winding in Primary

Go Reactance of Secondary in Primary = Secondary Leakage Reactance/(Transformation Ratio^2)

Primary Leakage Reactance

Go Primary Leakage Reactance = Reactance of Primary in Secondary/(Transformation Ratio^2)

Reactance of Primary Winding in Secondary

Go Reactance of Primary in Secondary = Primary Leakage Reactance*Transformation Ratio^2

Resistance of Secondary Winding in Primary

Go Resistance of Secondary in Primary = Resistance of Secondary/Transformation Ratio^2

Secondary Winding Resistance

Go Resistance of Secondary = Resistance of Secondary in Primary*Transformation Ratio^2

Primary Winding Resistance

Go Resistance of Primary = Resistance of Primary in Secondary/(Transformation Ratio^2)

Resistance of Primary Winding in Secondary

Go Resistance of Primary in Secondary = Resistance of Primary*Transformation Ratio^2

Transformation Ratio given Primary and Secondary Number of Turns

Go Transformation Ratio = Number of Turns in Secondary/Number of Turns in Primary

Secondary Leakage Reactance

Go Secondary Leakage Reactance = Self Induced EMF in Secondary/Secondary Current

Transformation Ratio given Primary and Secondary Current

Go Transformation Ratio = Primary Current/Secondary Current

Transformation Ratio given Primary and Secondary Voltage

Go Transformation Ratio = Secondary Voltage/Primary Voltage

Secondary Voltage given Voltage Transformation Ratio

Go Secondary Voltage = Primary Voltage*Transformation Ratio

Primary Voltage given Voltage Transformation Ratio

Go Primary Voltage = Secondary Voltage/Transformation Ratio

Efficiency of Transformer Formula

Efficiency = Output Power/Input Power
η = P_out/P_in

What material is used for the cores of a transformer and why ?

Lamination of specially alloyed silicon steel (silicon content 4 to 5%) are used due to its high electrical resistance ,high permeability non-ageing characteristics and minimum iron loss .

How to Calculate Efficiency of Transformer?

Efficiency of Transformer calculator uses Efficiency = Output Power/Input Power to calculate the Efficiency, Efficiency of Transformer is the ratio of output power to the input power of transformer.It describes how much power is lost while voltage conversion. Efficiency is denoted by η symbol.

How to calculate Efficiency of Transformer using this online calculator? To use this online calculator for Efficiency of Transformer, enter Output Power (P_out) & Input Power (P_in) and hit the calculate button. Here is how the Efficiency of Transformer calculation can be explained with given input values -> 0.888889 = 120000/135000.

FAQ

What is Efficiency of Transformer?

Efficiency of Transformer is the ratio of output power to the input power of transformer.It describes how much power is lost while voltage conversion and is represented as η = P_out/P_in or Efficiency = Output Power/Input Power. Output power is the power delivered to the load after losses & Input power. Means the product of the direct voltage applied to the last radio stage and the total direct current flowing to the last radio stage, measured without modulation.

How to calculate Efficiency of Transformer?

Efficiency of Transformer is the ratio of output power to the input power of transformer.It describes how much power is lost while voltage conversion is calculated using Efficiency = Output Power/Input Power. To calculate Efficiency of Transformer, you need Output Power (P_out) & Input Power (P_in). With our tool, you need to enter the respective value for Output Power & Input Power and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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