Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ?
2) Why ups required dedicated earth?

Answer Posted / guest

for every 100V ,we gotta add 10V in order to compensate the
transmission loss.hence its in this series. its actual
story goes like this.... thomas alva edisn introduced the
first dc distribution systm..i.e, manhatten dc system.he
wanted to make one incandescent lamp glow.for that he tried
with 100V n found the lamp to glow brightly.but when this
lamp was fixed in a street corner, it did not glow with the
xpected brightness.so he made it as 110V and tried the same
n he found the lamp to glow with that original
brightness.from that time, it became a std to add 10V for
the trans loss compensation.

Is This Answer Correct ?    11 Yes 39 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

State nyquist stability criterion.

652


In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1529


how to calculate the change over time for star delta starter for different KW motor?

3758


What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

1501


The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

1504






The specific heats of the gas at constant pressure and constant volume are respectively 1.0 kJ/kg K and 0.72 kJ/kg K; the value of R for the gas is

713


From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

1321


What is difference between slip rings and carbon burushes?

13939


How many double suspension hardware fittings are required on a double circuit transmission tower?

1430


1)Explain why the cradle guard is used on railway crossing in overhead line construction?

4423


Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

1625


Why back emf used for a dc motor? Highlight its significance.

680


state the working of discharge lamp?

1581


Difference between transition and diffusion capacitance

2355


What is the meaning of Insulation H for transformers????

1624