Answer / technic man

Simply Because the generators which are used from the
beginning of build a system , have a standard output
frequency 50HZ so all equipments and instruments you want to
supply it must have a standard freq. 50HZ
And if the generators have a standard output freq. 60Hz , so
all instruments also must have input frequency 60HZ.
that's the idea
And it has no relation with any technical issue

Answer / rajen thakkar

Every electrical equipment need rated voltage & fequence If
this frequency changes,the equipment doesn't work.
so,standardization should be required.In other country 60
Hz is the standard frequency But In india 50 Hz is the
standard frequency.

Answer / lince v d

Synchronous generator will have maximum efficiency in a particular range of speed 3000-3600rpm,we have
supply frequency, f=pn/120,
where p=no of poles, n=rotating speed in rpm,
The generation at this high speed is possible with 2 no of poles, so the frequency at 3000rpm is f=2*3000/120 = 50hz and the frequency at 3600rpm is f=2*3600/120 = 60hz so the generation at higher efficiency is possible when the supply frequency is in the range of 50hz to 60hz, in India 50hz is the standard frequency.

Answer / amu

this is bcoz from past designed systems our genset,turbine,all control and transmission systems designed for stable with 50HZ ,as other countries they use 60HZ and 110Vac,, we also can do, but we have to change whole the system,, and it includes huge cost,,

Answer / swum

There are 3 types of losses constant n variable (dependent
on frequency) so if d frequency is increased variable losses
will increase. Also at higher frequency heating up of cables
can also take place.

what is AVP?

2 Answers  

hopkinson's test

5 Answers   Bhel, NTPC,

we have provided 30 mA rccb to water cooler.but we feel shock in cooler body.what is the reason?

3 Answers   FCC,

Write down the design procedure of commutaj.

0 Answers  

what are the interview question asked in wind mill about electrical

0 Answers  

what is the difference in inductance and resistance.both oppose the flow of current but how.resistance having + ve power in both cycle while inductance having both power.

5 Answers  

What is the difference between amorphous core transformer and CRGO core transformer?.

0 Answers   DAE,

how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

2 Answers   Divis Laboratories,

Power systems

0 Answers   LB Engineering,

In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?

0 Answers  

What is the difference between online ups and offline ups?

44 Answers   Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS,

i need previous entrence exam papers of nhpc.

0 Answers