Answer / mustafa

the out put voltage of UPS is 220v
amp=600/220
=2.7 amps
delta/delta transformer to be used
since line voltage and phase voltage are equal

I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

2 Answers   MRF,

---

1. for eg, capacitor is used for many purposes(it act as filter, oscillator, bypass capacitor, memory storage etc...) 2. Please tell me some example circuits for different uses of capacitor( whenever and whereever and however we used capacitor as a filter, oscillator tuning etc..) 3. similarly for inductor and resistors(it act as what?) and when and how we want to act as like that?, and how we can used these components depends upon our requirments with example circuits and explanation? design to act as these components depends

0 Answers  

---

Fault current shall be part of tech specs of power cable or not?.

1 Answers   DAE,

---

Wat will happen if R-phase of an alternator is connected to B- Phase of AMF panel fed from alternator

4 Answers  

---

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

0 Answers  

---

what is diffrence between dc motor and dc generator?

3 Answers   HBL Power Systems,

---

For 280kw power. Which cable I can usr

3 Answers   Clean World, TCS,

---

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

---

Electrical breakdown strength of an insulating material depends on............?why because?

2 Answers  

---

What is the calculation for 1000Amps Air circuit breaker relay settings.

1 Answers  

---

how does an open delta transformer works

2 Answers  

---

In DC motor,the field MMF is given by NI.N-no.of field winding turns,I-excitation and both are constant.Then how could the main flux decreases due to armature reaction.

4 Answers   Bhel, IBM,

---