Answer Posted / krishna bagavan
for a transformer, ratio of primary voltage to secondary voltage is equal to ratio of primary turns to secondary turns ie ... v1/v2=n1/n2 ,then v2=v1n2/n1
v1 is incoming or system voltage on which we depend upon & we can not change.now the variables are either n1 or n2 to get required secondary voltage. comparably primary turns are less and it requires less insulation level to change the primary turns,so providing tap changer on primary is better option.
similarly v1/v2 = i2/i1, ie v2 = v1i1/i2, here also vi is system voltage,i1 and i2 are variables. comparably i2 is always higher side and changing primary current with available insulation level is easy,and providing tap changer in primary is the option.
Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI
Currently what is the highest capacity (MVA) of SPPg generator available in the market?
Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.
state the disadvantages of carbon filament???
Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT?
What types domain of laplace transforms? What behavior can laplace transform predict how the system work?
Why are iron cores in transformers made laminated?
How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?
what is the earth current,reverse power,electrical trip generator short circuit,low voltage, high voltage please discribe me
What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?
what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that
What do you mean by distribution transformers?
What is the unit of attenuation?
Explain what is clipper and clamper circuits?
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw