Answer / venkat

basically there are 3 types of relays 1)electromagnetic
relays 2)electro static relays 3)microprocessor based
relays. and the name to realys came from
application ,ex.over current ,under frequency,etc ......
so basic classification is just like first line

Answer / thowsif_emerson

Types of relay
1 Latching relay
2 Reed relay
3 Mercury-wetted relay
4 Polarized relay
5 Machine tool relay
6 Contactor relay
7 Solid-state relay
8 Solid state contactor relay
9 Buchholz relay
10 Forced-guided contacts relay
11 Overload protection relay

Answer / kumar

mr thowsif .i already get the above answer in
wikipedia .but i think this is not proper answer thats y i
submitted this question any other answer please
forword ,thank u

What is the principle of Excitation.

1 Answers  

---

how we can improve power factor from 0.8 to 0.85 or 0.9 & how we identify its either lag or lead ? thank you

7 Answers  

---

in house wiring when two wires are same colour coding and there is no any connection one end how to find which wire is earthing wire

1 Answers  

---

In transformers Which type of connection is preferred for harmonics to be minimum. primary : secondary star without neutral:open delta star with neutral :open delta star without neutral: delta star with neutral : delta explain why

1 Answers   Genco,

---

are induction motor have poles? yes / no , why?

3 Answers  

---

How LT megger works ?

0 Answers  

---

when we conduct high voltage testing why milli amp. is required?

2 Answers  

---

how to interlock 3 nos MCCBs using under voltage coil. please provide me circuit diagram?

0 Answers   Honeywell,

---

how can u determine size of the conductor by knowing the voltage level

2 Answers  

---

What type of pipe material G.I or M.S is used for sprinkler system?

2 Answers  

---

How vaccum is formed to create a vaccum interrupter or anything related with vaccum?

6 Answers  

---

Does Rheostat can use for power factor correction?

1 Answers   GOMS,

---