Answer / biplab

In 3phase induction motor,.....p.f=R2/(R^2+sX^2)^1/2

so directly related to slip.now if p.f reduces,slip increses
thus Nr(Rotor Speed) becomes slower..

Answer / rskh

active power is always depend on p.f.so,It's highly
considerable point.

Answer / simon peter

The ohm's say's V is directly prop to I it means if v raises its value the value of I. will raise automatically. The formula of P.f=v*i*cos fie. Hense if the value of V is increased then the value I will increase .Motor will draw less current , v from the supply & it will b known as good power factor of motor .

what is the pi test for current transformer?

1 Answers  

---

Abb 11kv how it is closing automatically when the cb is racking in and rack out when it reaching test position

1 Answers  

---

Hai I have 2500KVA,Transformer,13.8KV/380.DELTA/STAR.How much load that I can take interms of current?How can I calculate also when I have loads in KW?

10 Answers   L&T,

---

What is the approximate percentage of Si content in transformer core(CRGO-Cold Rolled Grain Oriented)? Why it is kept so low?

1 Answers  

---

Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

0 Answers   CEB,

---

I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

0 Answers  

---

IT IS DESIRABLE THAT THE INCOMING MACHINE SHOULD BE A LITTLE FAST AT THE TIME OF SYNCHRONIZING.EXPLAIN?

1 Answers  

---

what are the protecyion of transformer & generators

0 Answers  

---

define briefly the function of an ac electric generator (alternator)?

1 Answers  

---

How to select a cable size according to load

1 Answers   Red Bull,

---

in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

0 Answers  

---

what is mean by unity power factor?why are u calling Resistivity load also unity power factor?

2 Answers  

---