Questions – Answers

Electrical and Electronics Engineering Interview Questions and Answers

What is the Objection to have Light Bulbs & Lamps Connected in Series?

Disadvantages of Light Bulbs and Lamps Connected in Series? Series connection for household wiring like fans, switches, light bulbs etc. is not a preferred way instead of parallel or series-parallel…
Read More »

Will a DC Shunt Motor Operate on an AC Supply?

What Happens if We Connect a DC Shunt Motor to the AC Supply? The Shunt winding has a large number of turns so that it has appreciable inductance. When A.C…
Read More »
Difference Between Power and Distribution Transformer

Main Difference Between Power Transformer and Distribution Transformer The working principle of all transformers is the same i.e. electromagnetic induction whereas design, function, purpose of applications and winding configurations differentiate…
Read More »

What is the Purpose of Ground Wire in Overhead Transmission Lines?

The Role of Earth Wire or Ground Wire in Overhead Power Lines Ground wire or earth wire (also known as OPGV) is a bare conductor supported at the top of…
Read More »
How To Calculate Your Electricity Bill? – Power Bill Calculator

How to Calculate Electricity Charges – Electric Bill Calculator + Solved Examples Calculating electricity bills and tariffs is generally straightforward for electrical engineering students, electricians and professionals. However, it can…
Read More »
Why are Generators and Alternators Rated in kVA, Not in kW?

Why is an Alternator or Generator Rated in kVA, Not in kW? As we already know why a transformer is rated in kVA instead of kW, the same principle applies…
Read More »
Why is a Transformer Rated in kVA, but Not in kW?

Why are Transformers Always Rated in kVA Instead of kW? As the name suggests, a transformer only transfers power from one circuit to another without changing the value of power and…
Read More »

Why Do We Need to Install a Starter with a Motor?

Why Do We Need to Connect a Starter with Electrical Motors? Essential and Need of Starter with Motor A starter is a device used in motors to start and accelerate.…
Read More »
What is an Electrical Transformer? Construction, Working, Types and Applications

What is a Transformer? Its Parts, Operation, Types, Limitation & Application What is a Transformer? As the name suggests, an Electrical Transformer transfers electrical power from one electrical circuit to…
Read More »