What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter

0 Answers   HCL,

---

what is two wattmeter test

2 Answers   Jindal,

---

whydoes the p.f of diesel generator always be 0.8 explain how will you determine the shortcircuit capacity of network

1 Answers   Dalkia,

---

This is about the recent problem that we have faced in our project site. We have 6/7.5 MVA. 66/11kV three phase star - star power transformer. The neutral was solidly connected to the earthing mat. But because of high resistance of earthing mat (130 ohm on LV and 180 ohm on HV), one day LV side neutral earthing conductor melted and we had a huge damage. Can any one plz tell me what might happen when we connect power transformer neutral to the earthing mat which has high resistance (>100 ohm ) ?????

2 Answers  

---

How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

0 Answers   Reliance,

---

HOW DEFINE THE IP FOR ELECTRICAL EQUIPMENT AND WHAT IS THE IP OF PANELS USING IN HAZARDOUS AREA ?

2 Answers  

---

what is the role and fuction of automatic transfer switch in rotary ups

0 Answers   Dynaspede,

---

does a DG set has low fault level as compared to that of a transformer.If yes then why.

0 Answers  

---

will the turbogenerator operate on leading power factor with out modification in the stator winding.

3 Answers   Toyota,

---

how can we test the polarity of a 3-phase transformer?

2 Answers  

---

Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

0 Answers  

---

why 3phase is 440v but where as we get phase voltage 220v,we have to get 220*3=660v.can u pleas give in detailed

3 Answers   Avantha Group,

---