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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

WHY THE RATINGS OF TRASNFORMER IS IN KVA?

Jindal,

5 5208

What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.

1 5648

How do we calculate the maximum amount of current in a 300 SQ.MM cable ?

Roto Power,

1102

If the maximum demand is 120 KVA in a building, then what is the Current taken according to load given ? Formula for it ?

3 4188

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

Pride Hotels,

1018

how the frequency was generated in power station

2 2874

As per which Indian Standard induction motors are manufactured?

2 2795

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

ABB,

2 3537

if a motor is running at 1500rpm then how you can find its HP

Construction,

1 2882

WHERE NEUTRAL WIRE IS CONNECTED AT DOMESTIC TO TRANSMISSION LINE(SINGLE PHASE TO THREE PHASE)

895

i want wipro vlsi placement pattern please send me

834

calotropis is an example of the following phyllotaxy

APGenco,

1 5374

Radio Carbon dating is used in a) find diseases b) find the age of relics c) find the carbon content in the atmosphere d) none of these

2 2358

How to improve insulation resistance of Motor

2 4546

why a single phase motor of same rating takes more amps than the three phase motor? as single phase motor at 230v takes 5amp per HP while 3 p motor takes 2.5amp per hp at 230v.

1 3249


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Un-Answered Questions { Electrical Engineering }

What is the function of under voltage release ?

511


As you achieve greater success with the company after some years, Will you like to be a share holder in our company?

1891


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) ?

1008


is it true there's a big difference in using Cummins or Denyo...especially power output or leakage

959


How to do maintenance of transformer feeder.

830






why we use circuit breakers for switching instead of normal switching device?

970


All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?

750


What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

1171


How to know of any cable size if there are not written on cabl?

987


What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?

1003


What is difference between insulating medium and fault current interruption medium in a switching device.

595


What is the difference between hot and cold loop testing?

153


If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

699


A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

196


Explain in brief description about the operation of DG sets.

1290