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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

2 3759

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

2 3007

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

6 6285

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

3 5070

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

Bhel,

2 5730

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

4 7444

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

3 4847

What is the equipment used to control the generator output?

3 3680

What are the factors to be considered during the Synchronization?

3 4603

What should be value of Circuit breaker operating time and tripping time?

5 11033

Why the CT Secondary is rated as 5A generally?

2 3989

At which time Synchronous generator act as a Synchronous Condenser?

1 5052

What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

2 5750

What are the protections to be used for Generator?

3 3736

Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

2546


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Un-Answered Questions { Electrical Engineering }

What consists of 2 or more thermocouples to be connented series?

1055


how can maintaince the acb contactor moveing and fixing kit

1124


Can any body tell me the different types of LT cables & their application.

1088


how does WTI work ?

1000


DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

1389






what is the stear deltaprinceple?

964


what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

1266


Circuit diagram of tube light without starter using electrical choke

3129


witch pump used in wtp

1125


What is the formula to calculate the rating of power cable for three phase current.

1185


Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

1051


How does HT work & Voltage required?

1244


If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1014


How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

964


I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

1510