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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the functaion of IGBT in UPS system?

1 2648

difference between microprocesser and microcontroler

HAL,

1 1983

What is the difference between Floot charge and Trickle Charge.

Torrent Power,

1 3763

what will happen if the input of a transformer is dc?

Hindalco,

10 6685

when we connect the capacitor banks in series with the circuit?

Cipla,

3 4946

Is it necessary to install Lighting Arrester on both side side (i.e HT and LT) of Transformer in a transmission substation? if yes Why on both side?

1 2433

which connection is safer series or parallel?usually which connection we prefer at home?

5 6456

what is the meaning of neutral displacement ???

1810

what happens if DC earthing and AC earthings are shorted?

1 4246

1. which type of transformer connection is preferred in case of power supply transformers? (A) Star/Star (B) Delta/Delta (C) Star/Delta (D) Zig Zag/Star 2. In a power transformer usuall which winding is closer to the core? (A) Primary winding (B) Secondary winding (C) Low Voltage winding (D) High Voltage winding 3. The power factor of a purely inductive load is (A) Zero (B) Lagging (C) Leading (D) Unity.

CECRI_Central_Electrical_Research_Institute,

9 7539

What is the permissible value of earth resistance!

Torrent Power,

11 29095

wt wil happen if a 120kv line is grounded

4 3691

how desiel generate sart fail of eb?

OPG, Wipro,

1202

What are effect of radio system in DCS Distributed control system ?

Sabic,

1 3003

what is role of mpu in dg

1 5341


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Un-Answered Questions { Electrical Engineering }

What is the difference between in Fourier series and Fourier Transform. and please tell me the difference between both of them and the why we use them in communication system?

1084


can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.

1231


write down the formula of cable size in RM if current is 50Amp.

497


Electrical Engineering

1008


Inductor and capacitor........power in one phase and ...... in it another phase.

1092






what happen when increase or decrease size of lamp,light.glass.

1054


What is the difference between circuit breaker and isolator

259


i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle

1078


briefly explain principle of resistance welding

950


How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

1173


how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

557


how to calculate maximum current

1118


What are two contours of nichols chart?

194


Which material is used for the core of a transformer and why?

189


Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

978