Answer Posted / makpsingh

Any transformer should have atleat four earthings.
2 connections for its neutral earthing and
2 connections for its body earhtings
All the connections should be with dedicated earth pits
which may be interconnected for relaiblity and to have
lower earth reistance value.
These earth pits should be duly marked and to be tested on
a dry day once in year of earth reisistance and earth
continuity. Earth Resistance value should be less than 5
ohms and if it is greater then these earth pits should be
treated to bring dowun the value.

Keywords: Die, Card, Coin, B/N 2 To 12

1288

---

I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

1611

---

What are Contactors? How they works and what its highest rating?

2152

---

How to calculate that clean water supply in one Day from 150 KLD STP?

2015

---

Where voltage are high and current to be interrupted is low the breaker preferred is:

2297

---

how much cable size required for 70 kilowatt load.

1688

---

Explain using drawings what is reverse PID action w.r.t PID controllers.

3460

---

Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com

2114

---

i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle

1982

---

What kind of maintenance is conducted for Transformer

2292

---

how single phase preventer works ?

2542

---

what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

1999

---

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2788

---

How many types of colling system it trformers?

1181

---

How to know the Max. current caring capacity of the cable by its size ?

1659

---