Answer / a k shukla

AC change path called frequency having 0 to 360 degree and
all alternator phase sequence design at 120 degree
differences ie 0/360 - 120 - 240 Degree universal in
3 phase sequence called R Y B

Answer / karun

We can transfer power 2 or 3 or 4 phase but we know that
actually power generation is done in 3 phase it is economic.
If we want to transfer 4phase we should generate power from
different generators.
and i agree this answer
"AC change path called frequency having 0 to 360 degree and
all alternator phase sequence design at 120 degree
differences ie., 0/360 - 120 - 240 Degree universal in
3 phase sequence called R Y B."

Answer / kumaresan r

R Y B OR 3 PHASE R N , Y N , B N, OR SINGLE PHASE R Y , BY , YB TWO PHASE ............................................................................................

Answer / simon

There is a device namely alternator/Genrator (big size) which genrates 3 Phase supply i.e R,Y,B in max of 11000v or 11kv only in India. Hense the multiple will b always in 3.

We have ONLINE UPS 15KvA (3PHASE 440V I/P,3PHASE O/P,440V) I want to step down from 440 to 220 V What to do. Pl. suggest with specification.

1 Answers   ARDE,

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why AC voltage source are generate as 50 Hz ?

4 Answers  

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Any one can explain if there is any harm from humming noise heard from air circuit breaker : we have 415 switch board having two incomers from transformers 3.3KV/415V , when bus coupler closed, and open one ACB incomer to work in one of the transformers, the current started hunting around 50 Amps, and heard humming noise from the air circuit breaker, although the load current was only 1200 amps while the ACB capacity is 2500 Amps, and the transformer 1600 KVA. The same didn't happen when taken the other transformer offline. Why this humming noise and current fluctuation? is there any implication or danger, bearing in mind that we just returned everything back to normal and stopped the maintenance of the transformer. Shall we go ahead and ignore this noise?

6 Answers  

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in a plug point why the hole size at the top is large?

9 Answers   Bhel, TCS,

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in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

0 Answers  

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when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

2 Answers   GATE,

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what is XF 200/240 V AC for Drawout Breaker.

1 Answers  

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how is the leakage current flow only through guard wire (when guard wire is connected in the circuit)????

2 Answers  

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difference b/w semiconductor and dielectric

2 Answers  

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sir vizag steel ka junior trainee ka paper kitne number ka ayega

0 Answers   Vizag Steel,

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how to select fuse rating for a 3-phase motor ???

0 Answers  

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what's mean by Transient stability analysis?

1 Answers  

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