Answer / shashank dixit

well, acc. to me ac waveform at input is must for a
transformer...now if we calculate the average value of a
square wave ,then we get a zero value which shows that
square wave is a pure ac wave...hence it can be fed to the
transformer and the output will be a square waveform with
increased or decreased magnitude compared to that of the
input waveform............but then again it will also depend
on time interval the square wave has +ve and -ve
durations.....increase in this duration may cause damage to
transformer(depending upon the transformer) since on
increasing the duration the transformer will take as dc wave..

Answer / umesh

outputb of the trasformer will be Squqre only,but the out
put of the trasformer will be less because of loss,

Answer / met

Study the square wave with "Serie of furier" then calculate
the armonics. use the simplified circuit of transformer and
finally apply the ohm law....

just simple like that...

sorry with my bad english

in an ideal transformer it will be a square wave in the
secondary.

Answer / iyyappan

square wave applied to primary transformer then output of
the secondary square wavefor

Answer / moti rgpv

ONLY SQURE WAVE

Why we called L-G fault as line to ground fault why ground? suppose if a line falls on building roof then can we called these fault as line to roof fault? please explain why ground term is used here?

3 Answers   Bhel,

What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?

13 Answers  

1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

0 Answers  

wht is this amps in power consuption and how can we convert that into consuption hours ? i am a sales executive of a energy saving lamps .

5 Answers   KSEB,

why do you give the dc supply to field of alternator

3 Answers  

is it true there's a big difference in using Cummins or Denyo...especially power output or leakage

0 Answers  

how can we choose the size of road crossing pipe for power cables

2 Answers   DLF,

what is the calculation method to design core and winding of a 200kva 3phase distribution transformer?

0 Answers  

How much current does a motor take in no load condition?

6 Answers  

What is complex power?

1 Answers   DRDO,

For a load of 40HP induction motor.what will be size of Armoured copper cable require to connect the motor to starter in Star-Delta?

1 Answers   CG,

How to perform a DC resistance test In Alternator and their proceduces?

0 Answers