Answer / jack

E.g. : Solar systems can be sized in 12, 24 or 48 volts.
As a general rule, smaller Photovoltaic systems are run on
12 volts. 24 or 48 volt equipment can handle 4,000 watt
systems. 48 volt systems are designed for energy
consumption needs of over 4,000 watts.

Answer / jack

we can use some power supplies and Electri motors

Answer / shafieque

48V are safe volts for hand hold devices.we can use these
volts in confined space like vessels etc.

can anybody give me current carrying capacity of cables e.g size of cable in sq.mm & its current capacity both alluminum & for copper

4 Answers  

---

What is the Diesel consumption between 82KVA DG Set and 180KVA DG Set for 1 hour.

1 Answers  

---

What is the field weakening mode of a ac motor?

1 Answers   L&T,

---

1. What are the tests to be carried out for CBCT? 2. can measure the secondary resistances? 3. with respect to secondary maximum how much voltage can be applied for IR test.

0 Answers  

---

We know flow of electron is current . But why electron flow from negative to positive and current from positive to negative?

4 Answers   Power Grid,

---

---

in transformer which grade oil will use?

3 Answers  

---

what is eddy current loss?

3 Answers  

---

Which of the following can be operated at higher frequencies ? -SCR -MOSFET -IGBT

4 Answers  

---

Why grables are put in substation?

1 Answers  

---

What is the difference between Split ring and slip ring?

8 Answers  

---

how to calculate optimum loading for transformer?

6 Answers  

---

whenewher three phase supply is given to induction motors revolving/rotating field is created & rotor rotates.When the three phase supply is given to three phase transformer then revolving,/rotating field is created or not? if not why?

1 Answers  

---