Wattmeter Reading Calculator

✖Voltage at Wattmeter Pressure Coil is typically proportional to the current being measured, generating a magnetic field that interacts with the current-carrying conductor for power measurement.ⓘ Voltage at Wattmeter Pressure Coil [V_wp]			+10% -10%
✖Total Iron Loss is defined as the loss that is caused due to the alternating flux in the core of the transformer.ⓘ Total Iron Loss [Pi]			+10% -10%
✖Potential Difference also known as voltage, is the external work needed to bring a charge from one location to another location in an electric field.ⓘ Potential Difference [V]			+10% -10%

✖Wattmeter Reading is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit.ⓘ Wattmeter Reading [W_r]

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Formula

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Wattmeter Reading

Formula

`"W"_{"r"} = ("V"_{"wp"}*"Pi")/("V")`

Example

`"9.029348"=("17.674468V"*"9.4W")/("18.4V")`

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Wattmeter Reading Solution

STEP 0: Pre-Calculation Summary

Formula Used

Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference)
W_r = (V_wp*Pi)/(V)
This formula uses 4 Variables

Variables Used

Wattmeter Reading - Wattmeter Reading is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit.
Voltage at Wattmeter Pressure Coil - (Measured in Volt) - Voltage at Wattmeter Pressure Coil is typically proportional to the current being measured, generating a magnetic field that interacts with the current-carrying conductor for power measurement.
Total Iron Loss - (Measured in Watt) - Total Iron Loss is defined as the loss that is caused due to the alternating flux in the core of the transformer.
Potential Difference - (Measured in Volt) - Potential Difference also known as voltage, is the external work needed to bring a charge from one location to another location in an electric field.

STEP 1: Convert Input(s) to Base Unit

Voltage at Wattmeter Pressure Coil: 17.674468 Volt --> 17.674468 Volt No Conversion Required
Total Iron Loss: 9.4 Watt --> 9.4 Watt No Conversion Required
Potential Difference: 18.4 Volt --> 18.4 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

W_r = (V_wp*Pi)/(V) --> (17.674468*9.4)/(18.4)

Evaluating ... ...

W_r = 9.0293477826087

STEP 3: Convert Result to Output's Unit

9.0293477826087 --> No Conversion Required

FINAL ANSWER

9.0293477826087 ≈ 9.029348 <-- Wattmeter Reading

(Calculation completed in 00.004 seconds)

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Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 13 Wattmeter Circuit Calculators

Total Power for Three Phase Wattmeter

Go Total Power = (Voltage through Phase 1*Current in Phase 1)+(Voltage through Phase 2*Current in Phase 2)+(Voltage through Phase 3*Current in Phase 3)

Resistance of Watt-meter pressure Coil

Go Resistance of Wattmeter Pressure Coil = (Voltage Induced in Secondary Winding 2-(Current in Pressure Coil Circuit*Resistance of Coil in Secondary Winding))/Current in Pressure Coil Circuit

Resistance of coil S1

Go Resistance of Coil in Secondary Winding = (Voltage Induced in Secondary Winding 2-(Current in Pressure Coil Circuit*Resistance of Wattmeter Pressure Coil))/Current in Pressure Coil Circuit

Power using Two Wattmeter Method

Go Total Power = sqrt(3)*Total Phase Voltage*Current in Phase 1*cos((30*(pi/180))-Phase Angle)

Total copper loss in secondary winding circuit

Go Total Copper Loss in Secondary Winding = ((Voltage Induced in Secondary Winding 2^2)/Resistance of Coil in Secondary Winding)+Resistance of Wattmeter Pressure Coil

Current in pressure coil circuit

Go Current in Pressure Coil Circuit = Voltage Induced in Secondary Winding 2/(Resistance of Wattmeter Pressure Coil+Resistance of Coil in Secondary Winding)

Voltage Induced in S2

Go Voltage Induced in Secondary Winding 2 = Current in Pressure Coil Circuit*(Resistance of Wattmeter Pressure Coil+Resistance of Coil in Secondary Winding)

DC Power (in Voltage Terms)

Go Total Power = (Total Voltage*Total Current)-(((Total Voltage)^2)/Resistance of the Voltmeter)

DC Power (in Current Terms)

Go Total Power = (Total Voltage*Total Current)-(((Total Current)^2)*Resistance of Ammeter)

AC Power

Go Instantaneous AC Power = Total Voltage*Current RMS Value*cos(Phase Angle)

Total Power using phi Angle

Go Total Power = 3*Total Phase Voltage*Total Phase Current*cos(Phase Angle)

Wattmeter Reading

Go Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference)

Voltage applied to wattmeter pressure coil

Go Voltage at Wattmeter Pressure Coil = (Wattmeter Reading*Potential Difference)/Total Iron Loss

Wattmeter Reading Formula

Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference)
W_r = (V_wp*Pi)/(V)

What is the purpose of measuring dissolved oxygen?

Dissolved oxygen is measured in boiler feed water for the addition of dosing compounds to remove oxygen to avoid corrosion in steam boilers. In wastewater plants, it is measured to estimate the quality of effluent.

How to Calculate Wattmeter Reading?

Wattmeter Reading calculator uses Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference) to calculate the Wattmeter Reading, The Wattmeter Reading formula is defined as is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for the measurement of utility frequency and audio frequency power. Wattmeter Reading is denoted by W_r symbol.

How to calculate Wattmeter Reading using this online calculator? To use this online calculator for Wattmeter Reading, enter Voltage at Wattmeter Pressure Coil (V_wp), Total Iron Loss (Pi) & Potential Difference (V) and hit the calculate button. Here is how the Wattmeter Reading calculation can be explained with given input values -> 9.029348 = (17.674468*9.4)/(18.4).

FAQ

What is Wattmeter Reading?

The Wattmeter Reading formula is defined as is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for the measurement of utility frequency and audio frequency power and is represented as W_r = (V_wp*Pi)/(V) or Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference). Voltage at Wattmeter Pressure Coil is typically proportional to the current being measured, generating a magnetic field that interacts with the current-carrying conductor for power measurement, Total Iron Loss is defined as the loss that is caused due to the alternating flux in the core of the transformer & Potential Difference also known as voltage, is the external work needed to bring a charge from one location to another location in an electric field.

How to calculate Wattmeter Reading?

The Wattmeter Reading formula is defined as is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for the measurement of utility frequency and audio frequency power is calculated using Wattmeter Reading = (Voltage at Wattmeter Pressure Coil*Total Iron Loss)/(Potential Difference). To calculate Wattmeter Reading, you need Voltage at Wattmeter Pressure Coil (V_wp), Total Iron Loss (Pi) & Potential Difference (V). With our tool, you need to enter the respective value for Voltage at Wattmeter Pressure Coil, Total Iron Loss & Potential Difference 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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