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Electrical Engineering Interview Questions & Answers

Induction Motor Interview Questions Answers

S Bharadwaj Reddy
What are the advantages and disadvantages of Induction Motors? Advantages: It is simple and rugged in construction It is relatively cheap Induction motors require less maintenance Induction motor has high...

DC machines and Induction Machines Viva Questions & Answers

S Bharadwaj Reddy
When DC Generator fails to build up the voltage, what are the reasons? No residual magnetism, reversal of field connections and the resistance in the load circuit may be greater...

Transformers Questions & Answers Part-1

S Bharadwaj Reddy
Inrush Currents in Transformers – Causes When a transformer is energized after a short interruption, the transformer may draw high inrush currents from the system due to core magnetization being...

Transformers Questions & Answers Part-2

S Bharadwaj Reddy
Auto-transformer Advantages: Auto-transformers in comparison with the double winding transformers are generally advantageous of the voltage ratio is favorable from the point of view of the equivalent size The reduction...

Transformers Questions & Answers Part-3

S Bharadwaj Reddy
Insulation Materials used in Transformers and Induction Motors Insulation materials used in transformers and motors are classified based on the temperature withstand capability. Some of the insulation classes used in...

Transformers Questions & Answers Part-4

S Bharadwaj Reddy
Where Star (wye) Delta transformer is used in Power system Star-Delta Transformer (Y-Δ ) Primary Y (High Voltage side) and Secondary ( Low Voltage side) Δ is generally used at...

Power System Protection and Relays Questions & Answers

S Bharadwaj Reddy
What is protective relay? It is an electrical device designed to initiate the isolation of a part of the electrical installation, or to operate an alarm signal, in the event...

Circuit Breaker Interview Questions & Answers

S Bharadwaj Reddy
What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close or open contact members, thus closing or opening an electrical circuit under the normal or abnormal...

Generator Protection Interview Questions & Answers

S Bharadwaj Reddy
Synchronous Generator Protection Interview Questions Answers What are the common types of generator faults? The common types of faults occurring in synchronous generators are: Stator winding faults (phase to phase...

Induction Motor Protection Interview Questions Answers

S Bharadwaj Reddy
Induction Motor Protection Interview Questions Answers What are the type of faults that are likely to occur in operation of 3 phase induction motor? The faults which are likely to...

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