Time Constant of Moving Iron Ammeter Solution

STEP 0: Pre-Calculation Summary
Formula Used
Time Constant = Shunt Inductance/Rsh
τ = Lsh/Rₛₕ
This formula uses 3 Variables
Variables Used
Time Constant - Time Constant gives the time constant for a moving iron instrument based ammeter.
Shunt Inductance - (Measured in Henry) - Shunt Inductance is the value of the inductance in the attached shunt.
Rsh - (Measured in Ohm) - Rsh is the shunt resistance in the coil.
STEP 1: Convert Input(s) to Base Unit
Shunt Inductance: 40 Henry --> 40 Henry No Conversion Required
Rsh: 0.02 Ohm --> 0.02 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
τ = Lsh/Rₛₕ --> 40/0.02
Evaluating ... ...
τ = 2000
STEP 3: Convert Result to Output's Unit
2000 --> No Conversion Required
FINAL ANSWER
2000 <-- Time Constant
(Calculation completed in 00.004 seconds)

Credits

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Vellore Institute of Technology (VIT), Vellore
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4 Moving Iron Type Circuit Calculators

m of Moving Iron Ammeter
Go Multiplying Power 3 = (Rm/Rsh)*sqrt((1+((Omega*Inductance)/Rm)^2)/(1+((Omega*Shunt Inductance)/Rsh)^2))
Angular Deflection of Moving Iron
Go Angle of Deflection MI = (0.5*((Current in Coil)^2)*Change in Inductance)/K (spring)
Deflecting Torque of Moving Iron
Go Torque = 0.5*((Current in Coil)^2)*Change in Inductance
Time Constant of Moving Iron Ammeter
Go Time Constant = Shunt Inductance/Rsh

Time Constant of Moving Iron Ammeter Formula

Time Constant = Shunt Inductance/Rsh
τ = Lsh/Rₛₕ

What is Moving Iron Instrument?

A moving-iron instrument is generally used to measure alternating voltages and currents. The moving element is an iron vane/plate. This iron is moved in a magnetic field produced by a stationary coil, which is excited by the current. On excitement, the coil behaves as an electromagnet, and the vane moves in such a way that the flux increases. Force is produced in the direction which results in the increment of coil inductance

How to Calculate Time Constant of Moving Iron Ammeter?

Time Constant of Moving Iron Ammeter calculator uses Time Constant = Shunt Inductance/Rsh to calculate the Time Constant, The Time Constant of Moving Iron Ammeter is the time required by the system to respond to change in shunt resistance or inductance. Time Constant is denoted by τ symbol.

How to calculate Time Constant of Moving Iron Ammeter using this online calculator? To use this online calculator for Time Constant of Moving Iron Ammeter, enter Shunt Inductance (Lsh) & Rsh (Rₛₕ) and hit the calculate button. Here is how the Time Constant of Moving Iron Ammeter calculation can be explained with given input values -> 2000 = 40/0.02.

FAQ

What is Time Constant of Moving Iron Ammeter?
The Time Constant of Moving Iron Ammeter is the time required by the system to respond to change in shunt resistance or inductance and is represented as τ = Lsh/Rₛₕ or Time Constant = Shunt Inductance/Rsh. Shunt Inductance is the value of the inductance in the attached shunt & Rsh is the shunt resistance in the coil.
How to calculate Time Constant of Moving Iron Ammeter?
The Time Constant of Moving Iron Ammeter is the time required by the system to respond to change in shunt resistance or inductance is calculated using Time Constant = Shunt Inductance/Rsh. To calculate Time Constant of Moving Iron Ammeter, you need Shunt Inductance (Lsh) & Rsh (Rₛₕ). With our tool, you need to enter the respective value for Shunt Inductance & Rsh 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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