Answer Posted / nagaraja bagi

Buchholz relay is used for Transformer Internal faults,bcoz
of over load or internal faults more heat will produce it
decomposes the oil and produces the gas and because of
transformer insulation gas will produce and it will try
move from main tank to conservator bcoz it is light in
weight then alarm float will operate and gives the alarm if
it exceeds then tripping float will operate and trip the
Breaker of Transformer.

What are root loci?

1069

---

What is the Diff. btw Manule Pull Station & Manule Abort Station Switches used in FM200 System??

1838

---

Approach of a cooling tower is the difference between temperatures of what factors?

1123

---

hi i will D.E.E.E.is completed pls send rrb diploma old qustion papaer sent in my e mail. i.d.

2316

---

What are the operation carried out in thermal power station?

1036

---

oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

2014

---

How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke

2076

---

What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?

2219

---

If breaker is undefined position, first step to do.

2241

---

I WANT HOW CALCULATE TO CABLE FOR WELDING PLANT ?

1814

---

What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

2792

---

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2572

---

why star point of HT motor not earthed?

2257

---

Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2888

---

for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

2560

---