only three phases are coming in step down tranformers.how to get neutral?5 4662
New istallation how many eathing have one transformer? Names of earthing connect places?10 20904
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 26959
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,25 373320
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 6873
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 10592
what is Aircraft earthing and what does it do?6 20214
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 4275
what is meant by form factor and hoe related with the HT transmission voltage2 5480
How to make vector group test of transformer?2 4917
According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.
What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?
How phase displacement change in the over current relay coils.
Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.
How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.
how to calculate the breaking capacity of different breakers.
How to calculate the sag of OPGW during stringing???
how is find out kwh step by step
when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir
why zero sequence impedance measurement is not applicable for single phase GT
What we mean by vintage of an engine+Generator?
how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
what the Microsoft .NET framework is?