Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).

2783

A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?

1989

Explain the following and how these are working with PLC Unit 1 I/O Module Card 2 Adaptor Card 3 Ribbon Adaptor 4 I/O bus 5 I/O Devices

1622

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1347

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

2181

What are the common sources of energy?

1096

how to get electrical supervisour certificate in gujarat

1960

what is the affect of earth's magnetic field on the frequency used in aircraft???

2010

What is the function of RCBO? What are the different sensitivity ratings & each application?

2811

Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com

1970

Why corona leads to production of Ozone and glow of the color VOILET?

1969

Explain what is electric traction?

1135

Why do we avoid electrical conduits in floors at apartments?

2074

i want wipro vlsi placement pattern please send me

1772

What id difference between power and energy?

1347