Electrical Engineering Interview Questions
Questions Answers Views Company eMail

1. What is differential relay? How it operates?

4672

How to calculate the Short Circuit Impedance in Transformer?

6501

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1443

While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply?

4984

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1479

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

6076

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

17302

. What should be the minimum and maximum ohmic value for earthing?

3690

Why DC Currents are not used in transformer?

6200

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

3687

As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

5368

How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

3823

. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV?

9154

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

6441

Explain why the Voltage drop will happen in 3 Phase line?

4376

Un-Answered Questions { Electrical Engineering }

CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415

2160

What the difference between ac and dc inductor an capacitor

1652

What are the commonly used schemes for the bus zone protection?

483

IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

1530

Dear sir my name Ankit i m Diploma holder present working in Welspun Corp ltd Anjar as Asst.engg (salary 14400/month ctc) i Would like to change my company also i have selected in ford India pvt ltd Sanand as trainee Tech with salary 12000/month so please suggest me for changing my job hope for *ve response

2354

What are PLC leader logic program method

1186

what is the difference between Power and Distribution transformers ?

1567

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

1155

Alternator rotor earth fault relay circuit

1485

what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

1345

What is an ac motor?

578

can anyone give an idea about dia calculation in cold rolling mill

1112

why we use copper earthing for neutral while for body GI.

4800

Define closed loop control system.

571

Which do you think is the most significant cause of energy loss in a factory?

1697