Answer / raul

the batteries in a station are floated onto the dc bus bars
with the help of float charger i.e. all the dc requirements
r being made with the help of float charger and not by the
battery itself which is done by keeping the float charger
voltage a few volts higher than d battery voltage........in
addition to provide d.c. requirements in a
station .......the float charger provides additional few
hundreds of amperes to the battery to compensate for the
losses in d capacity of the battery due to local action
among the plates of the battery........that is why it is
also called as TRICKLE charger......in case of a.c. failure
in station, battery comes in to play and the battery starts
getting discharged........so in order to keep the battery
charged at its rated values, boost charger comes into play
and charges the battery...........and after the restoration
of the a.c. supply to the station, it is again floated onto
the d.c. bus bars with the help of FLOAT charger........

A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main cable is 0.35A. Calculate, (1) The efficiency of the transformer. (2) the current in the lamp.

1 Answers  

---

I want the details about BHEL company examination.Can anyone able to help me please.

0 Answers  

---

Which motor has more efficiency ;Synchoronous or Induction motor ?

4 Answers   TATA,

---

what can i do line to line fault

4 Answers  

---

we specify current in case of feeder but in case of distributor voltage, why?

0 Answers  

---

What is the permissible sound level for 1000kva DG set and how the sound level is calculated.

1 Answers  

---

If Two Generators are working parellel in a network and suddenly the field of one Generator get weakened What will happened if there is no reverse power relay fixed in that Generator panel????

7 Answers  

---

critically criticize the application of ring main unit in power system

0 Answers  

---

What is the polarization index value ? (Pi value)and simple definition of polarization index ?

0 Answers  

---

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

0 Answers  

---

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

0 Answers   ABC, ACB,

---

What is the previous name of Cox's Bazar

0 Answers  

---