Answer / vinoth

A three phase or single phase power supply come into
rectifier,now three phase or single phase supply is
converted into dc supply goes to battery charger and
simultaneously goes to inverter now the dc supply inverted
into ac supply. This method is used in online ups.
Off line ups a three or single phase power supply come into
rectifier the rectified dc supply goes to inverter...Un
fortunately main incoming supply break down time the battery
supply goes to inverter.....

where and why do we use stright and cross cable?

0 Answers  

---

Define what do you mean by drift velocity and mobility of a free electron?

0 Answers  

---

What is the weight per meter (Kg/m)of 0.5mm dia copper 10 pair,50 pair and 100 pair,200 pair,500pair telephone cables?

0 Answers  

---

Tell me why the shape of op-amp is triangular not other shape?

0 Answers  

---

why we can give omega symbolto resistor? is there any spesific reason?

1 Answers  

---

Am naseem sabah..i applied for PE in BEL.if anybody having sample questions for written test in BEL,pls forward to my mail id ....nsm.sbh@gmail.com..plsssssssssssss

0 Answers  

---

If A speaks the truth 80% of the times, B speaks the truth 60% of the times. What is the probability that they tell the truth at the same time

2 Answers   Wipro,

---

materials of core and cladding

4 Answers   ONGC,

---

What is different between EPABX and PBX

0 Answers   Annai College,

---

Why The Rating Of Transformer Is In KVA While Of Motor Is In KW????

2 Answers  

---

Explain the importance of if in radio receiver?

0 Answers  

---

Define what is transistor biasing?

0 Answers  

---