Answer Posted / iamdon
The generating voltage is limited up to 22kV due to
following reasons.
1)At voltage greater than 22kV, it is not ecomomical to
design the insulation for generator.
2)With the increase in voltage,armature current increases
which causes more loss in winding.So temperature of winding
increases which in turn rise the temperature of machine.So
we need more efficient cooling technique which is again
uneconomical.
Techinacal data:
1)5 degree increase in temperature reduces the life of
insulation by a factor of half.
2)20 degree increase in temperature reduces the insulation
resistance by a factor of half.
Is This Answer Correct ? | 9 Yes | 1 No |
Post New Answer View All Answers
What is superposition theorem?
Mention what are the different colors on wires indicates?
What is critical disruptive voltage?
what is the relation between knowing of the distance between power transformer and the capacitor feeder in case of parallel operation
Can I use star delta connected induction motor for dual supply voltage?
What is the unit of attenuation?
How many types of colling system it trformers?
when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....
What is resonant peak?
DESCRIBE THE CONSTRUCTION ANDOPERATION OF BELT CONVEYORS AND SCR CONVEYORS , DRAW NEAT SKETCHES
what is W.T?specify the acceptable range?
Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA
What is mean by STUB protection?
difference between main metering kiosk and check metering kiosk
how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?