Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is XLPE type cable

Areva,

8 11502

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3456

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?

1591

What is erection of electrical system?

1 5603

what is rotatng magnetic field in case of three or multiple phase alternating current machines???

NHPC,

1 3144

Brushed alternator is also called dc generator ? its true or false ?explain it ?

5 5645

what is the working principle of Brushed alternator ? without exictation how we can give dc supply to rotor ?

1 3629

Totally how much power will be consumed in 1 hour cotinuous running of electric train engine?

L&T,

1 3880

Name some application zrea where IDMT relay can used?

SKB,

3 14789

i am working in a grid substation,TNEB having 13 yrs experience. Am I eligble to get apply for c licence now?

3 6459

I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

1575

HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?

1412

why different series of vfds (like allenbradley)are used in industry ?

1787

what is difference between c-power & u-power air circuit breaker?

Areva, IIT, Marine Electricals,

2 27889

what is meant by Back emf ?where its occur ?

6 11368


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Un-Answered Questions { Electrical Engineering }

I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

1243


How much load can be taken for chiller from 1500 kva transformer

842


What is Diff btw Fire Alarm & VESDA System???

1911


Define pole pitch?

581


ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

1587






why d.c produces corrosion

1472


Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

948


How much no load current of synchronous motor

1575


What is Surge Capacitor? Why it is use in Generator Circuit Breaker?

4586


What is a surge supressor why its is used in synchronous generators

1513


1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?

2008


how to select fuse rating for a 3-phase motor ???

1322


Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????

1355


How to calculate the sag on transmission Lines.

2391


1)we have 1000 cfm Blower,Dia-1Mtr,Velocity of air 94 m/s 2)We have Natural Air velocity 94m/s 3If i Put Wind Mill in natural air ,speed is 94m/s Then it will generate Assume 100kw 4)If i put same wind mill across the Blower,air speed is same 94m/s now the Question is Will it generate 100 kw?

1494