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Topic :: Transformer





Transformer Interview Questions
Questions Answers Views Company eMail

You required 5A from the transformer but you get 8A. How do you minimize this?

Bajaj, Siemens,

2 5683

In a star(primary) to delta(secondary) transformer,how you take the neutral point?

HLL,

3 6195

how to calculate the transformer losses.

Cipla,

4 23790

Brief use of isolation transformer & how it works.

 1 4527

HOW isolation transformer works.

 2 9995

specfication of transformer

 3 6399

We have isolation transformer 25kvA & ONLINE UPS 15KvA (3PHASE I/P,3PHASE O/P)where isolation should have connect,before UPS or after please brief.

DRJ ARDE,

1 5533

can I connect step down transformer(25KvA,240V Phase to phase)to output of online UPS(15KvA,440V PHASE TO PHASE) Load connect to TRANSFORMER is 13KvA,240V PHASE TO PHASE. please brief if it is wrong

DRJ ARDE,

1 4849

How will you explain transformer action in case of 3-phase induction motor?

 4 6765

a transformer can beb used as aload?give discription

Esses Eltech Systems,

2 4833

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution transformer (2 MVA, 11 KV to 440 Volts)?

 4 11642

why the tapping of transformer on ht side??????

CTS, OPTCL, Visa Steel,

12 42297

what is the voltage equation of 240/12 v transformer??

 1 4678

1.what is use of isolation transformer. 2.Differance between KWH,KVAH,KVARH,KVA. 3.Main use of the CT and PT.

 1 9362

What are protection of transformer on HT side & on LT side?

 4 21885



Related Topics


Un-Answered Questions { Transformer }

Difference between PowerPlay transformer and power play reports?

2517

All tape of electrical questions Answers tape of motor transformer e.o.t crane

2657

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

2081

what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.

2092

Draw the line diagram of diffretial relay connected to transformer?

2438

How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.

2376

Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

4323

how we arrange the hv side with delta connection in case 33/11kv of transformer.

1997

what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

2354

i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

2134

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

1926

How is the percentage impedence of a transformer fixed at design stage???

1978

How a capacitor discharge weld power supply works? what is the use of a pulse transformer?

2078

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

1953

what r the checklist while installing 500 kva transformer

2330