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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 5563

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

HLL,

3 6049

how to calculate the transformer losses.

Cipla,

4 23647

Brief use of isolation transformer & how it works.

 1 4452

HOW isolation transformer works.

 2 9877

specfication of transformer

 3 6273

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 5443

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 4768

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

 4 6572

a transformer can beb used as aload?give discription

Esses Eltech Systems,

2 4721

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 11495

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

CTS, OPTCL, Visa Steel,

12 41854

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

 1 4601

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

 1 9270

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

 4 21718



Related Topics


Un-Answered Questions { Transformer }

Difference between PowerPlay transformer and power play reports?

2485

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

2603

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?

2037

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

2044

Draw the line diagram of diffretial relay connected to transformer?

2386

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

2329

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

4269

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

1954

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

2287

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

2078

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?

1891

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

1943

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

2030

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

1907

what r the checklist while installing 500 kva transformer

2273