Answer / dharamveer

we can increase our frequency rate but on increasing f rate
our whole generation system has to modified which is too
much costly on other hand our appliance design has to
modified

Answer / soumya

f=(n*p)/120;
f=frequency=50;
n=rpm=3000;
p=no of poles of generators=2;
changing p is quite impossible,
changing rpm is costly;
loads are to be changed;
so it is not likely to change f in any country

Answer / bhupendra & mayur

yes by coupling 50 hertz motor with the generator of 200 or
100 or required hertz so our input will be 50hertz with
output of required hertz(especially for testing purpose)
only.

Answer / ashish mewada

WE can not increase frequency in particular system because
of in our power grid system equipment operate on 50 Hz also
in domestic industrial equipment working @5oHz.so it's not
harmful for this.
We can increase & decrease Frequency BY AC DRIVE IT IS
POSSIBLE

HOW MUCH CURRENT CAN CARRY A 50 kvar DELTA CAPACITOR BANK?

2 Answers  

---

what is looping circuit in electrical lighting circuits?

5 Answers   L&T,

---

what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

0 Answers   ME,

---

Can we use 3 phase energy meter for measureing power in 2 phase 440 V phase circuit?

2 Answers  

---

11/.433KV, 100KVA TRANSFORMER is supplied with .433KV AT ITS PRIMARY. HOW MUCH KVA IT CAN SUPPLY

8 Answers   ABB,

---

---

What is meant by soft starter used in motors?

4 Answers  

---

what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?

0 Answers  

---

What is the diference between increased saety motors and non sparking motors?

1 Answers  

---

A distribution transformer giving afrequency of 200HZ, where it is rated for 50HZ. when it will occure?

2 Answers  

---

Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

0 Answers  

---

why capacitor is placed in fan

4 Answers  

---

why we use star and delta connection?why we donot give the supply directly?

12 Answers   Hitech, Siemens, Tata Steel Limited,

---