Answer / k.prakashchandra

It is used to block unwanted DC supply.In case of Dg set
used for charging batteries, it blocks the reverse supply
to DC gen if the set fails.It protects dc appliances from
connecting wrong polarities to the supply.In battery
chargers it enables measurement of charging voltage and
battery voltage seperately.etc

what is Real power and Reactive power ? what is difference between them ?

5 Answers  

---

domine+aptitude test means?

2 Answers  

---

through which medium return supply given to alternator please answer in details

1 Answers   MahaGenco,

---

What is the basic difference of turn ratio & transformation ratio for a transformer?

8 Answers   IGT,

---

what is meant by PU value ? anyone can you explain briefly to me ?

3 Answers  

---

What is DC power factor??

2 Answers   HCL,

---

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

3 Answers  

---

What is servo Motor? What's the advantages of this motor over Induction motor?

1 Answers   Amtek,

---

what is meant by skin effect ?

3 Answers  

---

why DG sets power factor is 0.8 lagging.

1 Answers   Cummins,

---

what is function of rtu?

1 Answers  

---

one KVAR takes how much amps, and how to add power capacitors to electrical panels, for example if one of the MCC drawn 800amps means how much KVAR required

1 Answers  

---