Answer / bitm

it is the standard value to manufacture any electrical
equipment in India.

Answer / prathap

because frequence F=PN/120 where p= no of poles and N=speed
so in generating station they maintained constant speed

Answer / swum

1) There are two types of losses
constant loss
variable loss dependent on frequency
So if frequency is increased losses will increase

2) The Indian temperature is higher and hence High frequency
can further heat up wiring.

3) Reduce the frequency the efficiency of transmission lines
will fall

Answer / enggrashmi

its d standard value on wchich electrical equpment are designed to operate...but if we take value othr than 50hz then we have to make our own connections and eqipments...

Answer / sk rafiquil islam (kaithi,jamu

beacause of same frequency is to operate and control many of equipment & its standerds

Answer / nagarajan

Actually we are following British standard
Main reason
1.Atmospheric condition because USA people's using 110v,60Hz so size of the conductor is big one instead of we are using 220v 50hz s0 size of conductor is less and investment also less.
2.Size of conductor increases amount of heat increases.

Answer / anjali singh

For stable ac power distribution , frequency bandwidth is
between 40Hz - 70Hz .Since 40Hz is near to unstable so 50Hz
fequency is standardised in India

Answer / guest

due to atmospheric condition

what is IMPEDENCE? FORMULE?

6 Answers  

what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

I find that underground strip-armoiured,4core,LT PVC cables in an earthed power distribution sytem are occasionly found in charred condition-with no trace of it except ash. Is this because of no proper earth connection/continuity (giving rising to high armour resistance)in the joint enroute or because of insufficient capability (again due to high armour resistance)of cable-armour to carry fault current or due to neglected /unprotected overloading of the cable or due to high armour currents caused by power thefts where only phase(s) are unauthorisely tapped & at the point of poer consumption earth terminal is established by burring underground a not so good earthing rod (or using an underground water pipe for the purpose)

1 Answers  

which is the best book of electrical objective for placement

1 Answers  

Simple calculation of improving power factor?

5 Answers  

what time should we set to come on star contacter in stardelta starter?and for what reason we hav to set such time delay range?

2 Answers  

WHAT IS THE REASON,WE USED THREE CORE CABLE INSTEAD OF THREE SINGLE CORE CABLE.

2 Answers  

why voltage ratings of xmission are in 11, 33,66kv and why not 11.5 ,16,19 or any other

2 Answers   HCL,

what is torque & how it will produce & what is the formula for that.

2 Answers  

What is the transfer function?

0 Answers  

HOW TO CALCULATE THE CABLE SIZE FOR POWER CABLE, CONTROL CABLE AND INSTRUMENT CABLE

2 Answers   CA,

WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??

0 Answers   Teil,