Answer / nisarg d. patel

In India we provide an offset of 10% overload on the rated voltage level to easily accomodate the varying overload.So in accordance with this, 10 KV becomes 11, 60 KV as 66 and so on and so forth.But this convention is not followed in EHV above 500 KV where we follow the international transmission voltage levels like 730 KV, 1200 KV and so on.And also because the form factor is 1.11 so it becomes symmetric to have the transmission level as 1.1, 3.3 etc.

Answer / kolhe g j

Transformer changes the voltage level. Form factor for
sinusoidal AC 1.1 .

Answer / brijesh

Because of form factor that is 1.1

Answer / virendra joshi

correct is just because of form factor ,

Form factor = Rms value / Average value

Answer / ashi

its due to form factor

Answer / e.subash chandrasekar

Because of form factor 1.1

Answer / k.sahadevan nair

In India and other commonwealth countries, in the initial stage maximum generation voltage was 11 KV considering maximum available insulation rating. In order to step up this voltage,secondary of transformers should be 33 KV, 66 KV, 110 KV ,132 KV, 220 KV etc. So HT voltage of all step up/down transformers were fixed at multiples of 11. This has become a practice. This has nothing to do with form factor 1.11
When generation voltage is improved due to advancement of technology it has become difficult to change rating of all existing transformers. Naturally rating of transmission voltage of multiples of 11 continued and still going on. This is not applicable to EHT as this is a recent development and limited to certain countries only.

Answer / er. akil

at 11 kv level losses should be minimum
so.....

Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB

11 Answers   Engineers India Limited, wbsedcl,

what do you mean by PF correction. A motor is rated at 15 kw,415 volts, 0.7 pf and eff of 0.92. The powerfactor is improved to 0.98 by adding capacitors at the bus. calculate the current drawn by motor under full load condition before and after pf correction

5 Answers  

How to calculate load requirement of a 50 flat apartment with 5 kw each unit,sizing of cable,transformer

1 Answers  

What is difference is of VSD,VFD,VSDS, are they the same as the direct current to control dc using above mention

0 Answers  

What is the difference between MCCB,ELCB,RCB & MCB

2 Answers   Bhel, HCL, HPL,

what is the difference between direct loading and indirect loading?

1 Answers  

what is advantage in open delta connection?

20 Answers  

What is voltage ratio of a transformer?

0 Answers  

How will you calculate the correct KWH value if your CT is 600/5 and your KWH meter is rated for 100/5

1 Answers   L&T,

what is max. continous current of LT side of distribtion transformers? ie for25kVA, 63kVA, 100kVA, 200kVA etc

2 Answers  

whatis the commertial spec. of distribution boards ?

0 Answers   Bosch,

when we increase load , current drawn from source also increases why ?

5 Answers