## Efficiency of Transformer

The transformer is a vital link between the load and the supply. The efficiency of transformer is very important in view of energy saving.The transformer … Read more

## EMF Equation of Transformer | Turns Ratio of Transformer

EMF equation of transformer is very important for understanding the working of the transformer. When a sinusoidal voltage is applied to the primary of the … Read more

## Why Making Current of Circuit Breaker is More than Breaking Current?

What is Making and Breaking Current of Circuit breaker? The circuit breaker is used for switching on and off the circuit and also for the … Read more

## Rotating Magnetic Field in Three Phase Induction Motor

The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120°. When the primary winding or stator is … Read more

## Application of Squirrel Cage And Slip Ring Induction Motor

There are two types of 3 phase induction motor. These are squirrel cage induction motor & slip ring induction motor. We shall discuss the application … Read more

## Why Induction Motor Takes High Starting Current?

Working Principle of Induction Motor: The induction motor draws high starting current as compared to the running condition. The starting current of the induction motor … Read more

## Polarization Index Test and DAR Test

Polarization index test is 10 minutes to 1 minutes ratio test of insulation resistance. Similarly, DAR test is 60 seconds to 30 seconds insulation … Read more

## What is the effect of the speed regulator of a ceiling fan on power consumption?

If we talk about the conventional fan regulator, it has the resistances of different value for regulating the output voltage. The output voltage is governed … Read more

## How to Calculate Burden of CT

Burden of the current transformer is expressed in VA. The total VA burden should be taken into account when CT is used for measuring or … Read more

## Back EMF and its Significance in DC Motor

What is Back EMF in a DC Motor? When the DC voltage is applied to the armature of the DC motor,the motor draws enormously high … Read more