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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to determine motor size for a fan application?

EDC,

1781

Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?

 1484

What is meant by term Back to back in HVDC transmission?

SSC,

1 3465

how we can calculate LT side current of transformer

L&T,

2 7666

which motor is used in our Indian Ceiling fan -Capacitor start and run or Capacitor start? (during repair i saw only one capacitor so it should be start only)

ABB, Bajaj Electricals, Power Grid, Ruchi Soya, Suzuki,

5 15128

what is the principle of switchgear and its function

 1 2996

Please mention available current rating for MCB,RCCB,MCCB in the market or any website

ETCO,

1 8157

rating of ups??

 1 2911

Is it possible to connect a dYN1 transformer in parallel with a YNd11 transformer.

 4 14132

16kv transformeris stolen in my village.and department is not taking action.then what should i do.any shortcut .please help any idea

 1 2788

how can we select the rating of Load break switch that is connected to the primary protection of 200 kva 11kv/415v distribution transformer?? step by step calculated answr pls...thnk.u

Maruti Suzuki,

2 5507

What is difference between VCB and SF6 breaker

 4 7364

what is suitable cable for 25 HP motor ? start with VFD ac supply 50 hz

Mac,

3 5375

In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

 1507

if one potential missing in energy meter , how much % slow the energy meter?

NTPC, SK,

1 4711

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Un-Answered Questions { Electrical Engineering }

what is the main function of capacitors in mccs.

1262

Refernce currents are to be generated using refernce cueernts how can this be done??

1560

how to calculate the settings for shaft ct protn in hydro generators

1493

Safety of on line ups

1481

In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

1486




How to work meggar?

1350

Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

1641

what is transient voltage?

1783

what is the maintaining Cf in UPS.

1722

WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?

1474

any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

1614

what is the transformer turn ratio formula and give some examples?

1920

what is transient enclosure vltage , very fast transients, very fast transient over voltages

1632

what do w do when the output of generator is fluctuating?

1668

What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

979

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