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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

can we synchronize star system generators with delta system generators?

1065

can we synchronize star system generators with delta system transmission line ? and how ?

1910

Can we convert off line transformer to on line transformer

NHPC,

1082

Can we convert off load tap changer transformer to on load tap changer transformer

2 4937

why two fuses are used in battery charging room?one in positive line and the other in negative line?do any DC system require two fuses?

HPCL,

1 3155

how many test is necessary for 27mva transformer.

HEG,

3 4685

Why we use series reactor in power system?

Cadbury, HEG, Uttam,

9 18322

How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?

OCL,

1243

What is differential relay? How it operates?

1 3778

. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

1180

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

1107

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

2 5969

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

1166

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

1230

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

1 2893


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Un-Answered Questions { Electrical Engineering }

what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

2125


What is the minimum underground tank size capacity considered for firefighting purpose?

1084


How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

998


If any cable burnt how can we identify it burnt by high current of high voltage? 

1569


What is the tube exial fan?

1142






Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.

1033


wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

1097


How to checked frequency drive output voltages?

262


what are the analog quality input for protection function?what are minimum reqiments?

1034


if flux and load static in dc motor and supply voltage increases 20% then what happened in speed

1013


List of equipments required foe industrial repair lab.

1106


explain wiring system

1639


What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation

1091


i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good

1289


What is open loop and control loop systems?

218