Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2903

what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?

2091

HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

2118

can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

2049

What is the unit audit? if our Max demand is something and we found much more unit then how to improve our max demand?

1952

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1806

what is the difference b/w pvc cu conductor and cu breaded wire..?

3569

1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

2759

how the works electronic energy meter?

2166

In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??

2075

HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?

2049

Why can't we take NO LOAD TRIAL of motors having V1 mounting??

1926

What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?

2156

is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.

1716

draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.

2032