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Deflecting Torque in Electrodynamic Wattmeter Formula

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Deflecting torque is the mechanical force exerted on a meter's needle or pointer due to an applied current or voltage, causing it to move and indicate the measured quantity. Check FAQs

T d = \frac{V t \cdot I \cdot \cos (Φ) \cdot dM|dθ}{R p}

T_d - Deflecting Torque?V_t - Total Voltage?I - Total Current?Φ - Phase Angle?dM|dθ - Inductance Change with Deflection Angle?R_p - Pressure Coil Resistance?

Deflecting Torque in Electrodynamic Wattmeter Example

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Here is how the Deflecting Torque in Electrodynamic Wattmeter equation looks like with Values.

Here is how the Deflecting Torque in Electrodynamic Wattmeter equation looks like with Units.

Here is how the Deflecting Torque in Electrodynamic Wattmeter equation looks like.

0.2182 = \frac{10 \cdot 0.5 \cdot \cos (1.04) \cdot 0.35}{4.06}

0.2182N*m = \frac{10V \cdot 0.5A \cdot \cos (1.04rad) \cdot 0.35H/rad}{4.06Ω}

0.2182 = \frac{10 \cdot 0.5 \cdot \cos (1.04) \cdot 0.35}{4.06}

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Deflecting Torque in Electrodynamic Wattmeter Solution

Follow our step by step solution on how to calculate Deflecting Torque in Electrodynamic Wattmeter?

FIRST Step Consider the formula

T d = \frac{V t \cdot I \cdot \cos (Φ) \cdot dM|dθ}{R p}

Next Step Substitute values of Variables

∴

T d = \frac{10V \cdot 0.5A \cdot \cos (1.04rad) \cdot 0.35H/rad}{4.06Ω}

Next Step Prepare to Evaluate

∴

T d = \frac{10 \cdot 0.5 \cdot \cos (1.04) \cdot 0.35}{4.06}

Next Step Evaluate

∴

T d = 0.218198386738267N*m

LAST Step Rounding Answer

∴

T d = 0.2182N*m

Deflecting Torque in Electrodynamic Wattmeter Formula Elements

Variables

Functions

Deflecting Torque

Deflecting torque is the mechanical force exerted on a meter's needle or pointer due to an applied current or voltage, causing it to move and indicate the measured quantity.

Symbol: T_d

Measurement: TorqueUnit: N*m

Note: Value should be greater than 0.

Formulas to find Deflecting Torque

Total Voltage

Total Voltage refers to the combined electrical voltage across all phases of a multi-phase electrical system.

Symbol: V_t

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Total Voltage

Total Current

Total Current is the sum of the current flowing through the load and pressure coil in a wattmeter circuit.

Symbol: I

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Total Current

Phase Angle

Phase Angle is the measure of the difference in phase between two periodic signals. It indicates how much one signal is leading or lagging behind another.

Symbol: Φ

Measurement: AngleUnit: rad

Note: Value should be greater than 0.

Formulas to find Phase Angle

Inductance Change with Deflection Angle

Inductance Change with Deflection Angle refers to the variation in the inductance of a coil or inductor as a result of changes in the angle of deflection.

Symbol: dM|dθ

Measurement: Change in Inductance with Change in AngleUnit: H/rad

Note: Value should be greater than 0.

Formulas to find Inductance Change with Deflection Angle

Pressure Coil Resistance

Pressure Coil Resistance is defined as a measure of the opposition to current flow in the pressure coil of wattmeter.

Symbol: R_p

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Formulas to find Pressure Coil Resistance

cos

Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle.

Syntax: cos(Angle)

Other formulas in Wattmeter Circuit category

Go Power using Two Wattmeter Method

P t = \sqrt{3} \cdot V ph \cdot I 1 \cdot \cos (Φ)

Go Total Power using phi Angle

P t = 3 \cdot V ph \cdot I ph \cdot \cos (Φ)

Go DC Power (in Voltage Terms)

P t = V t \cdot I - (\frac{{V t}^{2}}{R vm})

Go DC Power (in Current Terms)

P t = V t \cdot I - I^{2} \cdot R a

How to Evaluate Deflecting Torque in Electrodynamic Wattmeter?

Deflecting Torque in Electrodynamic Wattmeter evaluator uses Deflecting Torque = (Total Voltage*Total Current*cos(Phase Angle)*Inductance Change with Deflection Angle)/Pressure Coil Resistance to evaluate the Deflecting Torque, The Deflecting Torque in Electrodynamic Wattmeter formula is used to calculate the deflecting torque produced by an electrodynamic type of wattmeter when deflecting torque is balanced by restoring torque. Deflecting Torque is denoted by T_d symbol.

How to evaluate Deflecting Torque in Electrodynamic Wattmeter using this online evaluator? To use this online evaluator for Deflecting Torque in Electrodynamic Wattmeter, enter Total Voltage (V_t), Total Current (I), Phase Angle (Φ), Inductance Change with Deflection Angle (dM|dθ) & Pressure Coil Resistance (R_p) and hit the calculate button.

FAQs on Deflecting Torque in Electrodynamic Wattmeter

What is the formula to find Deflecting Torque in Electrodynamic Wattmeter?

The formula of Deflecting Torque in Electrodynamic Wattmeter is expressed as Deflecting Torque = (Total Voltage*Total Current*cos(Phase Angle)*Inductance Change with Deflection Angle)/Pressure Coil Resistance. Here is an example- 0.218198 = (10*0.5*cos(1.04)*0.35)/4.06.

How to calculate Deflecting Torque in Electrodynamic Wattmeter?

With Total Voltage (V_t), Total Current (I), Phase Angle (Φ), Inductance Change with Deflection Angle (dM|dθ) & Pressure Coil Resistance (R_p) we can find Deflecting Torque in Electrodynamic Wattmeter using the formula - Deflecting Torque = (Total Voltage*Total Current*cos(Phase Angle)*Inductance Change with Deflection Angle)/Pressure Coil Resistance. This formula also uses Cosine (cos) function(s).

Can the Deflecting Torque in Electrodynamic Wattmeter be negative?

No, the Deflecting Torque in Electrodynamic Wattmeter, measured in Torque cannot be negative.

Which unit is used to measure Deflecting Torque in Electrodynamic Wattmeter?

Deflecting Torque in Electrodynamic Wattmeter is usually measured using the Newton Meter[N*m] for Torque. Newton Centimeter[N*m], Newton Millimeter[N*m], Kilonewton Meter[N*m] are the few other units in which Deflecting Torque in Electrodynamic Wattmeter can be measured.

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Deflecting Torque in Electrodynamic Wattmeter Formula

Deflecting Torque in Electrodynamic Wattmeter Example

Deflecting Torque in Electrodynamic Wattmeter Solution

Deflecting Torque in Electrodynamic Wattmeter Formula Elements

Other formulas in Wattmeter Circuit category

How to Evaluate Deflecting Torque in Electrodynamic Wattmeter?

FAQs on Deflecting Torque in Electrodynamic Wattmeter

Variable Name