Answer / vasuessar

woking: basically ammeter is a current measuring electrical
device. In D.C ammeter is also used for measuring d.c
current only.

connection: to connect the d.c ammeter "series" to the
ciruit by the way it measures the current.

Answer / ashwin

A DC ammeter is also known as moving coil or mc ammeter. For it to work connect it in series as current remains unchanged in series. So when the ammeter is connected in series the current flows through the coil in the presence of a magnetic field which causes a deflection.

for further clarification go to the link below:

http://en.wikipedia.org/wiki/Ammeter

what are problems caused by the pdu in rack server

0 Answers  

---

Is there any question in the name of Static Switch in UPS??

0 Answers  

---

diffrence between alternating and pulsating field?

1 Answers  

---

what mean by analog ,digital,numerical meters and relays? say the example?

0 Answers   ABB,

---

is it possible to use a tranformer to regulate an unstable system voltage?

3 Answers  

---

when power transformer is flashed which gas is produce in side?

5 Answers  

---

1.wat is the advantage of induction motor? 2.wat is diffrence between 1-phase and 3-phase induction motor?

2 Answers  

---

What is the major difference between P.T. & C.V.T ? Why CVT is used in HT Transmission line in place of P.T.?

13 Answers   APGenco, OPTCL,

---

Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.

0 Answers  

---

what is excitation/

0 Answers   ABB, Tata Steel Limited,

---

what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 Answers   ABB,

---

open circuit test when performed on double the voltage & double the freq, then what will happen with p.f and current magnitude?

1 Answers   Aarti Drugs,

---