Answer / raji g

IMPEDENCE IN AN AC CIRCUIT IS
=VOLTAGE/CURRENT

Answer / koriya rajesh

impedance=sqrt(r^2+ X^2); where X=xl-xc

Answer / tamil

impedance is a combination of resistance and reactance (capacitive reactance or inductive reactance ) Z=R+jXC

Answer / naqash

impedance no formula

Answer / ibrahim

capacitance opposite impedance
impedence formula :Z=1/c

Answer / anil patel

Z=under root R^2+(Xl-Xc)^2
Z=I/V it`s unit is mho

why 30kva ups buzzing(hamming) sound?

2 Answers   Madhya Pradesh Electricity Board MPEB,

how many amps in 1 KVA? V=440v, PF=0.8 and FREQ=50Hz

22 Answers  

my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.

3 Answers  

If the load of transformer is getting more than its rating,,,than how to overcome this problem? Suppose thee rating of transformer is 315kva and the load is going beyond than the rating say around load: 352kva... Than how can we solve this problem without deducting the load.

14 Answers   Hyundai,

what dose the arrow indicate in the symbol of power transformer?

1 Answers  

Why the vector group of excitation transformer in static excitation system is Dy5?

2 Answers   CSEB, SRF,

what is the definition of a power transformer ?

4 Answers  

Dear sir, I am working in wind mill division , pls explain Pls explain in details with formula My question is Wind speed 3.5 M/s Gen RPM is 1500 ( 25 K/w Production ) Wind speed 12 M/s Gen RPM is 1500 ( 220 K/w Production ) Why in 3.5 m/s generation was low , why in 12 m/s generation was high , Pls dont explain wind force or wind density , that one already i know For the above question RPM was same why the KW was different Answer : 1. Its depends on the density ( Force ) of the air Sir , Pls explain wit Formula sir

1 Answers   Vestas,

Can we use droop CT in neutral in place of W phase of alternator ?

2 Answers  

whycircuit breaker is not connected at the generator end where the capacity of the generator is more say 60MW, 100MW etc.

2 Answers   Adani, Adani Power,

what the good value of earth resistance test

3 Answers  

what is ups Paralleling? how is load sharing at that time ? what are the things we have to note that time?

1 Answers