Topic :: Transformer





Transformer Interview Questions
Questions Answers Views Company eMail

What is turn ratio of a transformer?

669

What is an ideal transformer?

660

What are the types of instrument transformer?

629

What do you mean by a voltage transformer?

690

What current flows in the transformer primary when its secondary is open?

648

What do you mean by distribution transformers?

668

What is called limb of a transformer?

611

The windings of a transformer are divided into several coils, because?

816

What do you mean by an instrument transformer?

656

What do you mean by power transformer?

646

What is the use of oil in transformers?

633

Why are iron cores in transformers made laminated?

670

What do you mean by a current transformer?

648

What do you mean by ratio correction factor of instrument transformer?

707

What is the emf equation of a transformer?

675




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2118


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?

1617


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

1611


Draw the line diagram of diffretial relay connected to transformer?

1971






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

1872


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

3849


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

1550


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

1769


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

1628


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?

1475


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

1506


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

1581


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

1490


what r the checklist while installing 500 kva transformer

1811