In india the power supply is always in multiple of 11,
eg.220 V, 440 V...
what is the reason?
Answer Posted / kk
because in india 11 is considered as shubh shagun.
| Is This Answer Correct ? | 4 Yes | 30 No |
Post New Answer View All Answers
What are the material used for inductance coil?
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??
can we synchronize star system generators with delta system transmission line ? and how ?
iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?
what is the voltage regulation for unity and zero power factor?
how test transfomer(3 phase75kva) by megger
What will be the effect if I use inverter as UPS mood?
We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.
Battery is a voltage source? give one example of current source and why?
tan delta equation test on alternators
Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?
what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...