Answer / raxit

the function of pulse transformer is to provide isolation between control circuit and power circuit.

Answer / himanshu

Pulse transformer gives pulses to gate unit of thyristers
for conduction

Answer / bhavneet

The transformers are generally dI/dt modules but where in
there is requirement of transformers in switching the sudden
change in current offers very high inductance, which can
distort the output waveform. If the input square wave the
output might be distorted to trapezoidal forms or can have
transients going back into the input line also, as in case
of inverters. A pulse transformer is very very low on
hysteresis and can transfer almost 1:1 input waveform to
Output. Also thereby eliminating any time lag in the
pulse.Its feasible for lower currents but for higher
currents its very very expensive to produce.

Answer / revathi

It is feasible lower current.It also transfer input waveform to output.

why only violet glow appears in corona effect?

1 Answers  

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If we give the 440 V supply at secondary winding of the transformer then what will affect at primary winding???????

6 Answers  

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what's the activities of reactor in Buchholz relay?

1 Answers   Yahoo,

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What is the automatic voltage regulator with servomotor?

0 Answers   Simbhaoli Sugars,

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Define characteristics impedance?

0 Answers  

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transmisancy eficencey calculation formula

1 Answers  

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what will be the efficiency off x'mer during no load test and during short circuit test

1 Answers   GPSC Gujarat Public Service Commission,

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Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 Answers  

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what is the mean of"turbo" in turbo alternator???

1 Answers   CCCL,

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(1)For 3 No 1500 KVA transformer require on one single bus bar or need to be section through bus coupler means upto 3MVA.(2) 22KV Net work system as ring, How maney I/C required or 0ne I/C and one O/G.(3) What should be rating of VCB for 22 KV line.(4)Electrical/mechanical inter lock, why we need.

0 Answers  

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750kva 11/415kv transformer having percentage impedence is5.64%. 11KV HV whose current 39.37A and 415V LV whose current 1043.43A.resistance is 2.5ohm. find no load loss and full load loss?

2 Answers  

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Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?

1 Answers  

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