Answer / ramendra shukla

Reactive power:- the electrical power component
(impedencei.e. resistive,capacitive, inductive load) which
react on active power of electrical suupy is know as
reactive power and given by; Reactive power = visin phi

Active power:- if the presence of only Resistance component
in the power then it is known as active power or the when
the when the cosin angle diffrence between voltage and
current is zero are in same phase or unity pf then the
multification of vlotage and current is known as active
power i.e. P = VI
To put the voltage and current into same phase or closeby
we need to put APFC or Sych. Motor on our utility to
maintain the PF as unity.

Answer / cracked

reactive power - power drawn from the supply for the
excitation (production of magnetic field) of magnetic
coils/circuits of the machine.
so when using machine with large windings, consumption of
reactive power is more which leads to poor power factor and
hence power factor correction is needed.

what is per unit calculation?looking for simple and strong explanation thk u

0 Answers  

---

what is difference between c-power & u-power air circuit breaker?

2 Answers   Areva, IIT, Marine Electricals,

---

Can a generator runs after getting 1st stator earth fault.

0 Answers  

---

Give 3 phase transformer connections for 24 pulse rectifier using thyristors.

0 Answers  

---

What mean power grid fail. why power grid fail.

1 Answers   Intas, Tech Mahindra,

---

---

how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me

0 Answers  

---

what should be the acceptrd value of winding resistance for 2.5MVA transformer

0 Answers  

---

do any one help me to get "C" license,, i have doubts ,,, if mediators ter pls call me,, my no is 8056640042

0 Answers  

---

In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

0 Answers  

---

How stabilizer works

1 Answers  

---

what is the disadvantages of star connected alternator?

4 Answers  

---

why transformer impedance measure in % (percentage)

4 Answers   Hindalco,

---