Answer / sanjay n

Relay is a electromechanical switch which requires AC/DC
supply to operate it.By giving the reqired supply the coil
get magnetised and it makes or breaks the contact.

Answer / ravindra reddy

Relay will operate when is there any fault occurs on ckt the
fault information will send to circuit breaker and trip
it.so finally the circuit will protected.

Answer / lrankin

A relay is an electro-mechanical device which is used as
switch. The control side has a coil which when energized
(with the rated current) will produce a magnetic field
which will attract an electronic arm to a contact which
will then allow the relay to turn on a device such as a
lamp.
An AC relay works the same way with one difference.
Another coil is used along with the normal coil used in a
relay to supply some opposition when the coil is seeing the
voltage go negative. Since it holds it's magnetic charge
long enough to oppose the turn off of the main coil, the
relay will stay engaged and not chatter.

Queensborough Community College All The Way!!!

Answer / j.santoshramanakumar

sorry still studied about switchgears so i thought it is a
switch

Answer / a

U both are wrong i m correct

Answer / j.santosh ramana kumar

relays are the switches like dpst,dpdt etc

1hp single phase load = howmuch 3 phase load

0 Answers  

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

0 Answers   JKN Limited,

Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.

0 Answers   DT Technologies,

What is the difference between lubricating oil and insulating Oil?

4 Answers   Orchid,

star delta advantage and disadvantage?

2 Answers  

What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

0 Answers  

why CT out put is 5 what ever the primary current.

2 Answers  

sir, is there any ratio,this much of A.C volt is equal to D.C voltage

3 Answers  

How to calculate the CFM to TR? What is the Formula

12 Answers   Carrier, Voltas,

in fuel level controller what is MOV please define.

2 Answers  

What is gross error?

0 Answers  

What is Working principle of electronic choke?

1 Answers