**Contents**show

## What is reactance in induction motor?

Abstract: The leakage reactance of an induction motor that **determines the locked-rotor current at full voltage** is generally much smaller than the reactance that determines the full-load power factor or the pullout torque.

## What is stator leakage reactance?

28.8.

The armature leakage reactance X_{1} results from stator leakage flux that crosses **the stator** slots, flux that passes circumferentially from tooth to tooth round the airgap without entering the rotor and flux linking the stator endwinding. X_{1} is a component of all the positive- and negative-sequence reactances.

## What is rotor reactance?

The rotor resistance R_{2} is constant. It is independent of slip. The reactance of the induction motor rotor depends upon **the inductance of the rotor, voltage frequency, and rotor’s current**. If L_{2} = inductance of rotor, the rotor reactance is given by. X_{2}=2πf_{2} L_{2} But f_{2}=sf_{1} ∴ X_{2}=2π sf_{1} L_{2}=s(2π f_{1} L_{2}) Or X_{2}=sX_{20}.

## What is rotor leakage reactance?

The leakage reactance of. stator and rotor are measured as **sum of stator reactance X1** and the referred reactance of rotor as X2´. The separation is done. by thumb rule.

## What is motor reactance?

In electrical circuits, reactance is **the opposition presented to alternating current by inductance or capacitance**. Greater reactance gives smaller current for the same applied voltage.

## How do you calculate stator current?

Therefore, the frequency of induced current or voltage in the stator winding is **f = Ns P/120**—the supply frequency. When the rotor is stationary, s = 1. Under these conditions, the per phase rotor e.m.f. E2 has a frequency equal to that of supply frequency f.

## What is magnetizing reactance?

The magnetizing reactance is defined as **the result of calculating the electric machine magnetic circuit**. In this chapter, the magnetic circuit is calculated by the use of an electric equivalent circuit, the elements of which represent the magnetizing reactance values of magnetic circuit regions.

## What is meant by leakage reactance?

: **the part of the reactance of a circuit that corresponds to the leakage flux**.

## What is reactance in electrical engineering?

Reactance (also known as electrical reactance) is defined as **the opposition to the flow of current from a circuit element due to its inductance and capacitance**. Greater reactance leads to smaller currents for the same applied voltage. … The reactance is inductive if it releases energy in the form of a magnetic field.

## What is electronic reactance?

reactance, in electricity, **measure of the opposition that a circuit or a part of a circuit presents to electric current insofar as the current is varying or alternating**. Steady electric currents flowing along conductors in one direction undergo opposition called electrical resistance, but no reactance.

## What is rotor reactance in induction machine?

Rotor Circuit Model

The rotor resistance is constant and is independent of the slip. The reactance of the induction motor depends **upon the inductance of the rotor and the frequency of the voltage and current in the rotor**.

## What is stator resistance starter?

Their purpose is **to drop some voltage** and hence reduce the voltage applied across the motor terminals.