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Topic :: Transformer





Transformer Interview Questions
Questions Answers Views Company eMail

why do we need transformers?

12 43539

why transformer does not obey ohm law?

27 52661

say a transformer is designed for 33/11kv step down with ratio 0.33 for load 1 mva. if am giving 11kv as a input that same transformer what will happen to its o/p voltage. and whether it can be operated for 500kva

4 6144

Why electrical engineer use Cu Strip for transformer neutral why not GI Strip? What if we use GI instead of Cu does it affects the transformer performance.

7 18254

what is the pi test for current transformer?

1 7887

What is ONAN/ONAF1/ONAF2 for transformer cooling

5 64852

like the transformer another electrical static device which operate on same priencipal?

Power Grid, Vishal Transformers,

13 19345

how do we calculate of transformer in va?what is calculation?

2 12360

when we supply in primary side of transformer then the supply goes in secondary side?how it works?

4 6419

why the transformer secondary voltage is more than the load end voltage like t/f 11KV/433V for 415V(terminal voltage)

4 11923

What is OLTC in a transformer, specify its fuction.

Bhel, Isgec, L&T,

35 142418

What is OT in a transformer, specify its function.

2 5162

Whta is WT in a transformer, specify its function.

4 8814

Why don't we provide SURGE ARRESTORS for Transformer feeders?

5 10226

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

1978




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?

2082


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?

1927


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