Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

WHY WE USE CABLE JUNCTION AFTER BETWEEN TANSMISSION LINE AND TRANSFORMER

L&T,

1 3208

How to design CT for connected with Transformer OLTC operation? normally CT output design for 1A/5A range but during OLTC Tap position changing time how to function the CT?

HEG,

1 3339

what parameters are should nessary for control technic dc drive(in rolling mills)?

TATA,

2002

advantages & disadvantages of Lagging and leading power factor .

KMSC,

9628

What is Fan Coil Unit . How can we calculate CFM .

3 20621

Star Delta Diagram with full description

SKS Microfinance, Syscom,

2395

What is Fire Panel ? How it works ?

2079

how to caculate cable size for given amperes

RVNL,

5 8336

what are the reasons of low voltage during start the DG?

Godrej, Tata Power,

1 5757

why we test the core balance of the transformer?

1 4225

why we test the core balance of the transformer?

Siemens,

1 4994

why we condut tan delta test i want brief explain?

3 9235

how to calculate the ct burden?

1 7575

how is motorized megger operate?

2 7438

It is being often experienced that due to single phasing fault of any source transmission line of any closed loop synchronized circuit all the power transformers with primary stared trips but the power transformer with primary delta wont, why ?

MSEB,

1 4474

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Un-Answered Questions { Electrical Engineering }

How out of step protection relay works?

2447

What is BusBar integrity test and how it is conducted?

2274

Define the term factor of inertia.

2114

What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

2290

what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?

2711

Zone of protection and tripping scheme of arc protection relay.

1878

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

4056

How the over load setting for HT Motors calculated-provided in Numerical Relay

1823

What is d main advantage of using double circuit 3 phase transmission ?

1938

What is an order of a system.

1346

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2322

While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

3549

What is the different types of cable & current capacity of cable

1967

In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

1715

what is the difference b/w absolute encoder and incremental encoder?

2085

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