Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why battery is connected in series?

HP,

10 14186

what is isolation Transformer?

HP,

8 10188

I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.

7 13511

What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?

ITC Infotech,

1598

What is the difference between SSR drive& AC drive?

ITC Infotech,

1 6741

Alternators are invariably star connected why?

4 8200

i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1440

why secondary of open delta pt (two element pt) centre tap is earth what happen when this earth is removed

Essar,

1 5652

what is the difference between AC choke (inductor) and DC choke (inductor), working and design point of view?

Electrotherm,

2 24537

how snubber circuit works to protect switching devices?

Electrotherm,

2 5661

i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

7 8792

we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 2878

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

Bhel, Indorama, Power Grid,

1 5826

As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 5300

three phase 180kva diesel generator can take how much load in amp and what is formula to get this?

lenovo,

13 57888


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

PLEASE TELL ME ABOUT QUESTION PAPER OF UPCL ENTERENCE EXAM.

6995


what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

1641


Why do we need interlocking in a HT metering or Ring main unit switchgear?

1544


What is the function of the circuit breaker failure relay?

1886


if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1434






am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1347


Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

1694


Why is back emf used for a DC motor? Highlight its significance.

688


what is RFID? thire application;

1517


I want to know how to calculate the size of electricity cable in building?

1522


WILL SCHNEIDER MAKE ACB(MASTERPACT)TRIP ON REVERSE POWER?

1805


Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

2319


What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

2052


Differentiate between digital phase converter and ordinary phase converter.

745


i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1534