only three phases are coming in step down tranformers.how to get neutral?5 4607
New istallation how many eathing have one transformer? Names of earthing connect places?10 20459
a bulb of 100W and anather bulb of 200W , rated supply voltage 230v.when supply voltage is reduced to 100v,which bulb will give more light? and why with calculation?12 26734
if the diameter of a conductor is 'R' then what is the distance between two bundle conductor in a phase?
transformers parts & function of each parts
Oracle, NFL, Matrix, GVK, Juniper Networks, Amara Raja, Bhutan Ferro Alloys Limited, Mechanical, Siemens, RRB, Electrical Tech, TCS, Breather, Electrical, ERDA, Pyramid Plastics, RPPL, Tulip Silk Mills,24 371224
in single phase we get 220 volt and in three phase 4420 v why this second Ques= in case three phase star conection our neutrul becom disconect what happan 3 Q=== a three phase house load and have unbalce load on different pahse diffrent current eg phase a 7A b 8A c 5A and voltage is 440 than how calculate it total load in kw pl give formula thanks8 6786
WHAT IS SEMICONDUCTOR? EXPLAIN DETAIL. FOR EXAMPLE TAKE A PENCIL.THE LEAD IS MADE UP OF GRAPHITE IT IS A CONDUCTOR.THE OUTER COVER IS MADE UP OF WOOD IT IS INSULATOR.PENCIL IS A SEMICODUCTOR MATERIAL.5 10460
what is Aircraft earthing and what does it do?6 19906
Why is the diffrential protection in DG. What if the CT polarity is reversed while connecting for the same type of protection? How polarity can be made ok?1 4237
what is meant by form factor and hoe related with the HT transmission voltage2 5432
How to make vector group test of transformer?2 4859
when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....
Comparision of Air break circuit breaker, SF6 Circuit breaker and vacuum circuit breaker.
what is the working principle of energy saver control panel. please give the complete calculation & theory.
wheather the size of windings in motor and generator are the same
(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?
when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you
What happened when voltage will half value of current ...
advantages and disadvantages of inverse definite minimum time RELAY
How many double suspension hardware fittings are required on a double circuit transmission tower?
How can we calculate C10 rating of a bttery from c5 or c20 ratings??
What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas
how to calculate IR value of 33KV cable ??
what is the internal working of star delta starter
How to decide whether A / B / C / D curve type MCB should be used?