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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

Infotech, Vijai Electricals,

3 11837

what is extra low voltage system

3 10603

WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

NTPC,

8 16489

Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?

2 4645

operation of diesel generator

2030

What is Antipumping Function & If we have C.T how we find the Ratio ?

2028

How to Convert Gen KW to H.T amps ?

2 6995

at which voltage level arcing ground is occurs ??????????

TATA,

2066

why test lamp didn't glow across 500v megger?

Aurobindo,

4 7973

why we are testing cables with DC supply not with AC supply?

Aurobindo, DEWA, L&T,

9 31039

What is the Difference Between resistance and resistivity?

Sun Pharma,

2 7470

what is the different between surgearrester and lighting arrester

HPCL,

4 8405

why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?

2 5367

what is the different bitween ETP & WTP

Square Pharma,

1 9990

According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

4172


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?

4052


what is mean by D.O. in distribution line poles?

1665


What is the difference between isolators and electrical circuit breakers?

1184


what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

3696


What is the principal of motor?

1101


Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

1943


Name the component u would expect to find in a switchgear assembly?

2032


What do you mean by an instrument transformer?

1081


I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1680


If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")

1979


where solid grounding and where grounding through ngr done and why?

2579


What is the difference between diode and a transistor in terms of the direction of current flow?

2215


PLS MENTION QUESTIONS ASKED IN IOCL INTERVIEW FOR ELECTRICAL EGG??

2423


A d.c. Shunt motor is found suitable to drive fans because they require?

1317


How to calculate energy stored in an inductance?

1146