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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why are tertiary windings used in transformers?

2 6423

Why do series motors have high starting torque?

3 7783

Can an inverter be used as a converter? How?

1094

Why is copper a better conductor of electricity than aluminium?

AES,

5 7634

What is meant by single line diagram?

2 9484

What is EOL?

1 2885

Difference between single phase and three phase?

1 4360

How does numerical relay work?

1 3133

Can VFD step up to 60 Hz if it is designed to receive 50 Hz input?

3 4088

How current is reduced in STAR connection?

6 23757

Differenc between the resistance and resisters?

5 4283

Why the Voltage rises when Leading Power Factor is occurs?

2 4754

how to make an earthing certificate

1372

what is your aim

L&T, TCS,

1071

DGs fuel and lube oil filters are not equal to one another.Why it is so.For example one MTU enginee fuel filter is one and lube oil filter-02nos other DGs are more.Please explain

1 1461


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Un-Answered Questions { Electrical Engineering }

in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly

1455


HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

970


why does the magnetic balance tests at transformer?

1004


explain the what is a drive ? 0 4 which type motor r use in the celling fan..... PCB plannet 2 13 If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not?? types of drives Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only. ACC 1 41 how the 3phase induction motor is running in 2phase supply with help of capacitor? 1 33 what is the actual difference betwen constructional details and constructional features? 1 20 how does commutator convert a.c to d.c?

3739


What happens to a motor if it is connected in Delta connection

198






What is dynamo?How it works and what is the function of dynamo in a DG.

1168


What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!

1400


Earth has zero potential then what would be the neutral potential ?

519


What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

941


Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

1148


what is the meaning of osr in transformer.

1110


what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

990


Why colled 440V to 3-phase supply.

1261


ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

1252


Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

1115