# Transformer FAQ | Interview Questions -Part -2

How does a transformer work? A transformer is an electric machine that converts AC voltage from one level to another level with minimum power loss. It is based on the…

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# Why is a transformer rated in KVA?

All electrical devices are rated based on the maximum power it can consume or generate or transfer. When few of them are rated in KW (kilowatts) or watts, few others…

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# Transformer FAQ | Interview Questions- Part -1

What is a transformer? By definition, a transformer is a static electrical device that transforms electric energy from one level to another level. Normally transformers are used to step up…

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# Why is the earth pin in a three-pin plug longer and thicker than the other pins?

Safety is the primary element of any circuit or electrical connection. Whether it is electric iron or refrigerator or any other home appliances, everywhere safety has to be ensured to…

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# Difference between neutral and earth / ground

This article focus on explaining the similarities and dissimilarities between neutral and earth (ground). Understanding the difference between neutral and earth may be difficult in the beginning. A Lot of…

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# Difference between over-current and overload

Over-current and overload are abnormal conditions occurring in a circuit. This article well explains the difference between over-current and overload. Difference between over-current and overload Over-current Any situation in which…

# Difference between Short circuit and overload

Short Circuit A short circuit occurs when two or more current-carrying conductors of different phases or different voltage levels or different terminal (in DC circuits) come in contact with each…

# Why ammeter is connected in series?

An Ammeter is a device used to measure the current flow through a conductor. The name is derived from the unit of current, Ampere. This article explains why is ammeter…

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# Commissioning procedure for VFD (Variable Frequency Drive)

Commissioning of variable speed drive is the process of checking, inspecting, testing and configuring the equipment at the project site so that it shall fulfil the technical and functional requirement…

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# Power Factor – Importance, Calculation and Correction techniques

In an AC power system, the power factor is a very important parameter that defines how efficiently electrical power is being utilized by the load. It is a rational number…

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