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Category : Electrical Q & A

Electrical Engineering Interview Questions & Answers

Top 50 Electrical Engineering Questions & Answers

S Bharadwaj Reddy
What is the difference between earth and neutral? Neutral is a return current path for equipments and earthing is protection for humans. Earth is a support for neutral. If neutral

Transformers Interview Questions & Answers

S Bharadwaj Reddy
Why is transformer flux constant? When a load is connected to a transformer current (say I2) flows through secondary coil thus an M.M.F (N2I2) is produced, this produces the secondary

Industrial Automation and Control Interview Questions

S Bharadwaj Reddy
What is derating factor? The factor by which the ratings of component parts are reduced to provide additional safety margins in critical applications or when the parts are subjected to extreme

Interview Questions on Battery Testing

S Bharadwaj Reddy
Measuring the float voltage of cells is usually easy, but how useful are the results produced by this measurement? In reality, float voltage measurements are of limited value. They can

Transmission and Distribution Interview Questions

S Bharadwaj Reddy
What for series and shunt compensation provided in EHV transmission lines? Series capacitance is provided in EHV lines to artificially reduce the series reactance of the line so as to

Advantages & Disadvantages of Air Insulated Substation

S Bharadwaj Reddy
Air Insulated Substation (AIS) or Outdoor Substations have all switchgear equipment, busbars and other switchyard equipment installed outside open to atmosphere. In earlier days for any voltage ratings AIS or

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