Answer / senthil

Relay is the electrically operated switch.
it used to protective, control and sequential switching
circuits.

Answer / sunil

relay is a protecting device which is sence the abnormal
condition(like any fault) & give the initiative to circuit
breaker,which is isolae the faulty one frm the ckt.

Answer / mradul varshney

RELAY IS A SWITCH. WHICH OPERATE WITH THE HELP OF MAGNETIC
CONDUCTION IN INBUILT MAGNATE.WHEN MAGNATE IS MAGNETISED
THEN ITS MAKE A CONNECTION.

Answer / m.praveen

A relay is a type of switch which has an electromagnet and
an iron rod. current causes the rod to switch back and
forth through two terminals,which activates two seperate
circuits,

Answer / pukhraj meghwanshi

Relay is electricly operated switch which operate the
auxillary cicuit. Relay is also used for limiting purpose
when circuit cross the limit then relay operat and acuate
the circuit breaker.

Answer / hasan mehdi

Relay is a device that detect the fault and initiates the
operation of the c.b to isolate the defective element from
the rest of the system

Answer / ashok

relay is a protecting device which is sence the abnormal
condition(like any fault) & give the initiative to circuit
breaker,which is isolae the faulty one frm the ckt.

Answer / suresh g

A relay is a device which senses the abnormal current
present in circuit and isolates the circuit from the fault
current by tripping the circuit breaker. Its contacts can
be used for providing interlocks there by making the system
more secure and safe

Answer / ramu

relay is a sensing device it gives signal to open the switch
(connected to fauled portion) when the fault occurs

Answer / debaroon ray

Relay is a protective device that detects the fault and
initiate the operation of circuit breaker to isolate the
defective circuit from the rest of the system.

where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single phase ?

3 Answers  

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1 Answers  

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In CT,which terminal(s1,s2) need to be grounded?

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what is the earth resistance

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