How does Resistance Vary with Diameter?
In this posts we shall study how does resistance vary with diameter.The resistance is inversely proportion to the area of the conductor.The area is proportional
Use of Shunt in Ammeter- Solved Examples
The main purpose of use of shunt in ammeter is to bypass the current. The ammeter can carry a small amount of current though it.
Harmonic Problems and UPS Solution for Computer Installation
Computers installations small or big are susceptible to harmonics in the power lines. The advance designs of computer and peripherals make them virtually failure proof.
Why can’t an Induction Motor run at synchronous speed?
The induction motor can’t run at synchronous speed because it is not possible to run the motor without load. Even the motor is at no
What is the slip value of a 3-phase induction motor at synchronous speed and starting speed?
When the stator of the induction motor is fed three phase supply, the synchronous rotating field is generated. The flux generated in the stator gets
Change of Resistance in Wires by Stretching
We shall understand with an example how the resistance of a wire changes with stretching its length. Example-1 –Change of Electrical Resistance with wire stretching
What is the difference between 0.2 and 0.2S class CT?
The metering class current transformer is used for metering the energy for revenue purposes. Therefore, the metering class current transformer must be as accurate as
Harmonics Filters – Cost and Effectiveness
The main characteristic of an electrical system is its waveform which, under all operating conditions and load conditions, must always remain a pure sine wave.
Working Principle of Active Harmonic Filter
The PWM INVERTER technology is the basic building block of an Active Harmonic Filter. Active filters are new generation harmonic filters which use modern technologies
Controlling Multiple Motors with one VFD
In many applications, we use a single VFD for multiple motors. In this method, more than one motor is connected to a single VFD drive.