Answer / vinod

Generator current depends on the power out put, if the
power is more current will be more.Sator current can be
reduced by increasing the genrator voltage, but there is
limit for increasing the voltage due to the insulation of
Stator ie. if the voltage is too high insulation level is
too thick and machine size will be too big and costlier.ie
why generation voltage is between 11 KV to 22 KV.

Answer / ajay

You can have generation voltage less than 11kV like 3.3kV,
6.6kV etc but normally not more than 22kV because at higher
voltages rotor insulation at high speed is practically very
difficult to manage.

Answer / nithi

The power generation found more economical,when it is
generated in the voltage level upto 15kv.that's why the
generator in the power sector are rated upto 15kv.

Answer / raji g

in electrical power generation side they produce large
amount of power that means that generator windings carry
very large amount of current for low voltages like 440. if
we use 11kv the current in alternator windings is
reduced....hence usually high range of voltages are used in
power generation side

Answer / vinod singh

now a days power is generated by using powerformers in some
contries at higher voltage. in england on lule river power
is generated at 30KV . and ABB is also planning to
manufacture powerformer to generate powerat 45KV.
morover power is generated at 26KV in mundra by tatapower

Answer / ashok kumar gupta

ONE REASON IS GENERATOR CURRENT AND 22 KV CAN BE FED DIRECTLY TO THE LOAD FOR SMALL POWER REQUIREMENTS AND REDUCTION TO DISTRIBUTION TRANSFORMERS OF 11 KV WILL IMPROVE EFFICIENCY.

Answer / gaurav tripathi

because mostly power is generated between this voltage

What is the significance of %Z in case of transformer?

1 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,

- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

Can we convert off load tap changer transformer to on load tap changer transformer

2 Answers  

In a 3Ph induction motor(old) 6 wires came out from terminal & not mentioned u1,v1,w1,u2,v2 & w2. how can find out the terminals? how can connect to star delta starter??

1 Answers  

How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.

0 Answers   ISS,

Sir, I need a power supply at 380V. The supply I get in three phase is rated 415V. The total supply I have from the supply company is 70KW. Kindly inform if it is better to use a voltage stabiliser for this purpose or a transformer

3 Answers  

what is the differencce inn series and cascade connection??

0 Answers  

what was the function of the auxillary relay?

3 Answers  

please send previous exams question papers

0 Answers  

how we can find of current direction(supply comming/out going direction) when a transmission line passing through sides.

0 Answers   ONGC,

if i am in front of transmission line how to know that current direction without any equipment

0 Answers