WHY WE USE CABLE JUNCTION AFTER BETWEEN TANSMISSION LINE
AND TRANSFORMER
Answer Posted / pritish
junction cable is placed in between the trans. and a sub station due to the following reasons.
when a high voltage surge fall on the transmission line it propagates to the either side of the tr. line. we know that the surge impedance of a transmission line is nearly 400 ohm and the surge impedance of a cable is 40 ohms. hence when a surge comes to the sub station from tr. line, the magnitude of surge voltage decreases to a great extent on the cable side due to voltage divider rule. hence the equipments in the SS can be protected.
for details contact :pritish.nath@gmail.com
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?
How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.
ratings of lightning arrester
Hi friends, i m electrical engineer i want a cdr for migration purpose so anybody have information about this then send me on jayesh_ee88@yahoo.com.please try to me
why we can use 1 to 5V dc
How to decide the size of the capacitor for a single phase induction motor say 2 HP ??
why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor
why the India electrical supply transmission loss is high when compare to us
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.
Is there chopping current in resistive circuit
How to convert a two phase power into a three phase power in induction machine?
What is nyquist contour?
WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME
what is the thumb rule for determination resistance of resistor?