Answer / ankamsreekar

The practical line testers are works for the voltages above
150v. The return path is earth (land surface) via human body.

When you touched to line the voltage across the tester is
230v. If you touched to neutral the voltage across the
tester is in order of 2-10V depending up on the conditions
of distribution transformer.

so the tester will not work.

Answer / jaswinder singh

Tester always lights up due to potential difference between
phase and earth. Neutral is at zero potential from earth so
the tester does not glow.

Answer / k.prakashchandra

I gave the wrong answer as the word 'not' escaped my
notice..The tester requires at least 40-60 volts to light
up depending upon the series resistor used.As neutral is at
almost zero potential from ground ,tester does not light up.

Answer / k.prakashchandra

A loose joint in the neutral wire

Where we can use 3.5c cables instead of 4c cables.Why?

4 Answers  

---

Where can I get CPWD electrical shedule rates in web? please help me.

1 Answers  

---

Please let me if star point(Nutral) of Delta/ Strar transformer, in 4wire (TPN+E) is tobe gruonded seperatly,inaddition to LV Panel earthing????

1 Answers  

---

1)we r having one problem .one dry type transformer(6.6KV/433V)is taking high magnetizing current on delta connected HV side of "U" phase when compared to other two phases.could any body tell the reason why it is happening? 2)why CT secondary side protection core has got higher winding resistance when compared to that of metering core of same CT?

2 Answers  

---

In synchronous generators field is rotor and armature is stator.Can we take the output at the rotor in case of synchronous generator by the dc excitation on the stator?

2 Answers  

---

how to make parrallal ups

1 Answers  

---

How Can You Relate Power Engineering With Electrical Engineering?

0 Answers   ABB,

---

Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 Answers  

---

what is meaning of bus riser

0 Answers   TeamLease,

---

How to improve the power factor from 0.8 to 0.98? Also tell me cost vs benefit analysis.

2 Answers  

---

what are the applications of PLC?

0 Answers  

---

In what condition the HT fuse breakes?

0 Answers  

---