i have 400/230v transformer and didnt done the neutral eatrhing. i connected one lamp to one phase and neutral to the earth. but the lamp is not glowing. again i connected neutral to earth and repeated the same. then the lamp is glowing. in the first condition i tested with a line tester also, at that time the tesrer is glowing what is happening i dont know can any one help me?

1 Answers  

---

What are the different protection systems used to protect the transformer internally and externally?

16 Answers  

---

What is electrical charger?

3 Answers   HCL,

---

What is the formula to calculate the no load current of a single & three phase induction motor

0 Answers   HCL, Nokia,

---

9.The material used for coating the electrode is called........

3 Answers   SSC, TELiBrahma,

---

why do we lay up the core of a cable?

0 Answers  

---

what is earthing/

3 Answers   B.Tech, CPCL, Mobiserv,

---

How to measure corona loss in a transmission line?(Plz ans only if u know the exact answer)

3 Answers  

---

WHAT ARE THE DFT AND RMS MEASURMENTS PRINCIPLE IN NUMERICAL TECHNOLOGY OF POWER SYSTEM ?? WHICH IS BETTER IN WHICH QUANTITY MEASURNMENT??

1 Answers  

---

For which purpose the temp. rise test of transformer is conducted?

2 Answers  

---

How does a clampmeter measures dc current

1 Answers  

---

what can i do line to line fault

4 Answers  

---