in railways why we use the power in 10,20 30kv,why not in
the multiple of 11kv
Answer Posted / nishant2110
Actually, Power rating generally comes in multiple of 11,
because of form factor.
Since form factor of sinusoidal wave is 1.11
So, wherever(generally in ac system) rating is given in RMS
value, they must have to multiply average value with
formfactor(1.11) and it comes as multiple of 11.
Now come to the real question,
Since, In Railways, DC series motor is used.
So, no need to specify rating in RMS values. That can be
specified in Average value. That's why, it is not in
multiple of 11kv.
Guys, this is my perception but i believe this is right
answer. Anyways, discussion will be appreciated.
Is This Answer Correct ? | 10 Yes | 0 No |
Post New Answer View All Answers
how can check the resistance of battery contact?
State The Difference Between Generator And Alternator?
grr resistance & contrator malt continuous
what kvrah y we need to take the readind of that
how to check ac servo motor
what r the checklist while installing a 380 kva DG set
What is control system?
Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)
How maesure earth neutral value & how much maximum value value required in between earth & neutral.
mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....
Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers
what will be d.g. capacity to cater together for 14hp A.C. load & 3kw lighting load
how to control the speed to switched reluctance motor
what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.