How Can we calculate the rating of a cable?Show the formula?
Answer Posted / shoebullah
with referance to prof.nazar
answer ... Cant we calculate
voltage drop by this formula
Vd= IZ
where Z= R*cos(pi) + X*sin(pi)
and R= r*1/1000, X=
x*1/1000 ......... I am
suggesting in this way also
we can find voltage drop of a
cable ....... And further we need
to calculate percentage of
voltage drop by this formula
%Vd= sq.root of 3 * Vd/VL
*100
where VL Is line voltage ... It
should be <3% for main
distribution board <5% for all
distribution board
Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
what is the ATS .And how it works.
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
Dear all, I'm manikandan I have done by DIPLOMA EEE from 2011 , I have 5 years of experience from Power plant instrumentation field , which one field is give long life & which one field is best ,I confused a lot and also I'm studying AMIE, can I choose which department from Section B examination? pls tell me
how to check avr of dg set of 125kva
difference between crane drive and line drive.
how to remover corona effect and hysteresis losses from contactor
Define pole pitch?
1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.
Pl. brief about break-down maintenance of machine tool.
how will we calculate the copper wire load..
When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?
The moisture in air will condense at
Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?
two phases with neutral supply can be taken in 3C X 10 sq.mm cable .
What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)