Answer / naresh

in case of dc ,the frequency is always constant .
where as in case of ac ,the frequency is defined as number
of cycles per second.

it is given by

F=(1/T).

Answer / pillay

Frequency measuring instruments are available ,just connect
across the voltages and the frequency can be determined
instantly. whereas as the abbreviation means the DC HAS GOT
NO FREQUENCY.

defination of controlled shunt reactor

0 Answers  

---

What is RSS Meter

0 Answers   Krishna Constructions,

---

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

0 Answers  

---

What is vacuum circuit breaker.define with cause and where be use it device?

0 Answers  

---

Can we use Ccapacitive voltage transformer directly for metering purpose?

0 Answers  

---

---

we all know that corona is nothing but ionization of air around the conductor and there by allowing current to pass through ionized air.but we are not getting any short circuit in between the respective phases though the air turned as a conductive media between them??

1 Answers   Siemens,

---

why open circuit test is conducted on hv side and short circuit test is conducted on lv side of a transformer ?what is the reason for it ?

3 Answers   HCL, NTPC,

---

What is the use of 1:1 isolation t/f in any circuit...?

3 Answers  

---

why frequency should be constant?

2 Answers  

---

Is it possible to interlock between ACB & MCCB?

2 Answers   Areva,

---

What is an exciter and how does it work?

7 Answers   FCUK, Lotte Chemical Titan, TATA,

---

what is the circulate the diesel in DG in side pls tell parts name and picture with circulate the diesel

0 Answers   Mukand,

---