Answer / engineer

25 kvw

If there is volagte between earth and neutral, what should be the reason ? and solution * What should be allowable limit in case, if the voltage between earth and neutral exist ? / OR what is limit for safe voltage between earth and neutral?

3 Answers  

---

What will happen when we connect 2 bulbs in series between 2 phases

7 Answers   Pepsi, PowerTech,

---

what is corona ?

3 Answers  

---

what is breaking capacity

1 Answers  

---

what are trouble functions of transformer?ex. prv trip,oltc,oti,wti.explain detail.

1 Answers  

---

---

Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

0 Answers   DAE,

---

In order that work may be done:(a) Two wires are necessary(b) The circuit must have a switch(c) Coal must be burnt(d) A supply of energy is required

1 Answers  

---

3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?

0 Answers  

---

how to calculate restraing current and operating current for differential protection if 20 mva transformer is OLTC 33 kv/11 kv ? and what should be the type and ratio of CT?

2 Answers   L&T, OPS,

---

How do you change an AC motor to DC? why there is only 50 Hz frequency in india & not other?

4 Answers   BSF, TATA,

---

HOW TO CALCULATE EARTHING SIZING?

0 Answers   L&T,

---

what is the disadvantages of star connected alternator?

4 Answers  

---