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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is d main difference between KVA and KWA

Charoen Pokphand,

2 14326

which type of insulation are used on 132kv transmission line

4 13134

which relay is used on long transmission lines

ABB, Bhel, Student, Tata Steel Limited,

10 28276

while calculating demand in my company the present load in kw is 212.... there 125kvar capacitor bank is installed by spliting as 50 in departments...the diasplay in panek biard shows 175kw... how could we know the amount of kvar used to compensate the kva

1 2260

sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.

1332

why DC source is used to idetify the polarity of CT/PT?

1 2878

what is corona ?

3 4130

what is the max. acceptable leakage current in 33kv bus bar

Tanesco,

2264

does the power factor of an induction motor improve upon used in parallel with a synchronous condenser , used commonly to provide a leading kva ?

1 2306

can a synchronous motor be made to rotate in a clockwise direction ?

1 2888

why stator winding of synchronous machine are connected in star connection ?

1 14980

what are the protection relays for trasformer

3 5206

size of condotory fron voltage level

1517

How much allowable difference current between on three phases Dear sir, We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870 rpm,2-pole squirrel cage induction Motor.And stator is connected in star connection with Liquid resistance stater to limit the starting current.It has coupled with Centrifugal air compressor.My question is it is loading 73% of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase- 78.3A.why the B phase current is that much of difference.Is it allowable, or any one tell me how much allowable current.If any method to calculate.

1 4768

What will happen if the rotor of an induction motor is fed from a 3 phase supply and the stator short circuited ?

4 20113


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Un-Answered Questions { Electrical Engineering }

IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

2840


what type of motor used to move a 1 ton gate? and relate ratings with load.

1188


th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.

1290


How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15

2505


How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

1305






is the value of inductance depends upon the value of thitha in doubly excited machine??

1396


l&t switch FN 63 handle position can we change

1905


Rules and standards of electrical control wiring ?

491


I want to do a mini project. Now I'm studying in 6th semis tor EEE Engineering.

1473


what is gridrotor resistance starter

1272


why all the feeders are designed in a particular manner ... is there any reason for that???

1309


We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

1052


Why can't we parallel Voltage transformer secondary circuits?

795


How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

1612


what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?

1616