Answer / balaji

The power consumption or the fan remains same when the
speed is change using ordinary electric regulator.Since the
power is wasted in resistor(regulator)..
But when the the speed of the fan is changed with the help
ELECTRONIC REGULATOR the power consumption of the fan also
changes...ie., when speed is decresed the power consumption
is also decresed...

Answer / s.karthik

i agree with you balaji,but i think when the speed of fan
decreses drop at electronic regulator increases and hence
the power..

How many homes can a 500kva transformer supply in S.A

1 Answers  

---

what is the meaning of "i.p.-43" and duty cycle-s1 on the name plate of a asynchronous machine?

1 Answers  

---

what r Grid stations?what r there role.Explain in detail

1 Answers  

---

why occ characteristics of generator is also called as magnatization characteristics

1 Answers  

---

In DC current-excitation to transformer, why it sucks more current? Eventhough there is no power transfer between primary and secondary? R is very low so it should suck less current only na thn y its current increases?

2 Answers   Cairn,

---

What is the main function of fuse?

7 Answers  

---

What is voltage

5 Answers   TATA,

---

What is vector group? What is meant by DYN11?Why is it needed?

13 Answers   Areva, Bhel, BRG, Escorts, Fortis,

---

What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

0 Answers  

---

Can we step up a 230V supply to 400V using a single phase transformer??

2 Answers  

---

if we convert ampers into kw,which one formula use by us,pls tell me?

11 Answers   ABB,

---

why transformers are sometimes kept on concrete benches..?

2 Answers  

---