Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the importance of setting TSM & PSM?

2 48314

what will happen ac motor give to dc supply

Areva, College School Exams Tests,

9 10183

what is Wave Trap? And its Function ? Detail? Where it is Used?

7 79017

what is the need of representing AC power in sinusoidal waveform? why not in square or rectangular etc...

Lanco,

8 8623

Why the earth terminal pin is larger than phase and neutral in three pin plug top>

TVS,

8 13456

We have laid the single core Armoured cable 7 nos ( 2 each phase & 1 neutral ) to cater our electrical load . the issue is though we have Glanded the cable both the end also givan the earthing to the panel both the end we are facing a heavy sparking at the gland side. what could be the reason.

12 12955

why ct ratio always rated 5.

1 3701

why CT out put is 5 what ever the primary current.

2 5054

Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

1556

what is the disadvantage of leading power factor...why can't we use it (pf=0) for a long period of time?

Appco, snsce,

10 33182

how can you size an automatic voltage regulator?

1875

is it possible to use a tranformer to regulate an unstable system voltage?

3 4320

Why Neutral Isolation is required?

1823

what is the diffrence between resistive load and capoasitive load.?

4 5131

what is the main use of ac and dc drives ? it is only used for speed variation or for power saver also?

1 3267


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Un-Answered Questions { Electrical Engineering }

what is tri state logic gate

1622


This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

2014


how to design the heater in temperature control unit to heat 50KL of water?

1434


I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

1297


Why corona leads to production of Ozone and glow of the color VOILET?

1505






what is gas turbine intercooling ?

1613


how to check three phase motor torque value?

1751


how generator load test is conducted?what are the steps?

1145


what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

3835


I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

1743


difference between high and low impedance BUS BAR relay??

1073


calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3073


what does a string of resistors in a series will do?

749


Initially, when the input is not equal to the output — what type of response is this?

671


WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

4277