Electrical Engineering Interview Questions
Questions Answers Views Company eMail

WHY WE USE CABLE JUNCTION AFTER BETWEEN TANSMISSION LINE AND TRANSFORMER

L&T,

1 2415

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 2569

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

TATA,

1500

advantages & disadvantages of Lagging and leading power factor .

KMSC,

9078

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

3 19178

Star Delta Diagram with full description

SKS Microfinance, Syscom,

1885

What is Fire Panel ? How it works ?

1580

how to caculate cable size for given amperes

RVNL,

5 6483

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

Godrej, Tata Power,

1 4539

why we test the core balance of the transformer?

1 3469

why we test the core balance of the transformer?

Siemens,

1 4202

why we condut tan delta test i want brief explain?

3 8069

how to calculate the ct burden?

1 6786

how is motorized megger operate?

2 6141

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 3594


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Un-Answered Questions { Electrical Engineering }

is it possible to start a motor in felid connected to a remote mcc

1404


How to calculate capacitor bank value to maintain unity power factor with some suitable example?

659


What Is HO factor in power selection

1544


In ht capacitor ckt we are using LBS Panel it having isolator with fuse, one of HT fuse flash over, so what is reason behind this event.

1570


in what type of applications v can use q meter?

1654






what is the difference between switch yard to residential area.and how much required it.

1261


ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

1571


I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3360


. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

2828


what is the purpose of using filters in a protective relaying scheme?

1751


what r substations?what r there work?why voltages r incresed and then reduced during distribution of power

1457


hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1530


what is sevice settings for mccb?How can be it setted?

1473


if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?

2115


What is the practical way to calculate the cable size for known ampere load?

928