why we used ZNO in Lightning arrester.

0 Answers  

---

In VSD (variable speed drive)I/P and O/P connections given wrongly what will happen?

5 Answers  

---

what are effects of harmonics in the three phase a.c power system ?

2 Answers   AIIMS,

---

Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

---

how can we chacke adiod in a circuit

2 Answers  

---

A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 Answers  

---

What is the difference between earth and neutral

4 Answers   ABB, Tamboli Engineers,

---

What is the recommended voltage gap between Live and Earth and ,Earth and Neutral.If these are exceded what is the solution.

2 Answers  

---

what is ring main unit(Rmu)? what is its function

1 Answers  

---

Why reverse relay used

2 Answers   cpgn,

---

which type of motor is used in automatic swing gate

0 Answers   Sail,

---

Hi to u all : Friends: Why when operate on 2 phase welding machine the power metr goes reverse ?? the meter is god on other loads. thanks

2 Answers   Gedco,

---