Answer / alok das

To grounding the neutral of a transformer becease this time
neutral is works as earthing. And the earthing safety they
transformer by any kinds of electrical falts. over load
current & lighting.

Answer / bhavesh patel

grounding of neutral is because of whenever there is fault in equipment, the excessive current flow through in it and it will ground through neutral wire

Answer / simon peter

In distribution transformer the secondary side is always in star connection i,.e a neutal piont is drawn. Neutal wire & the core of x-mer is connected to earthing bcs if there is enormous load variation the overall load will b on phase wires hense x-mer might blow off due to increase in the value of hysteresis & eddy losses........

Motor and transformer working with same principle so why motor rotates while transformer not?

7 Answers  

---

how to test a motor from megger

5 Answers   JSW,

---

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

0 Answers  

---

how does an open delta transformer works

2 Answers  

---

what happen if drive input fail momentry at 48.5 HZ frequency?

0 Answers  

---

what is main advantage if motor connected in star or delta?

3 Answers   Essar,

---

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)

3 Answers  

---

why impedance test in power cables?

1 Answers   CSE,

---

For 132 KV line, PT or CVT which is prefered for measuring & protection? is there any IS or IEE standard available?

1 Answers  

---

where used of HVDS system.

3 Answers  

---

what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

---

in 220/132 substation in place of PT what equipment used & what r the role of that equipment

2 Answers  

---