how to measure the voltage drop in cables also give
formulas to calculate.
Answer Posted / ajay daultani
Voltage drop ( % ) =1.732*I * L* (( R *(cosfie) + X*sin
(fie ))* 100 /( n*v*1000)
where I is load current
L is length of cable
R - resistance
X - reactance
fie is angle calculated by tan^-1 ( R/Z )
n is number of runs
v is voltage
| Is This Answer Correct ? | 16 Yes | 6 No |
Post New Answer View All Answers
1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.
IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.
Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?
Match the following a)(X'+Y') b)X'Y' C)XY 1)NAND 2)NOR 3)Carry
What is shutdown of electrical sub station?
What do you mean by phasors?
What is a single phase autotransformer?
dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish
What is meant by control system?
How to maintain ac plant?
types of central Air conditioner plant?
what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?
Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault
i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
why we are using earth pit in sub stations.?