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Rahul kumar verma

· started a discussion

· 1 Months ago

Wrong answers (Question: 332093.0 )

what is this guys a lot of mistakes in answer of the test series.

Question:

Differential relays are used to protect the equipment against-

Options:
A)

internal faults

B)

reverse current

C)

over voltage

D)

over current

Solution:

Ans:(d) Differential relays are used to protect the equipment against all internal faults.

Knowledge Expert

· commented

· 1 Months ago

Definition of Differential Relay. The differential relay is one that operates when there is a difference between two or more similar electrical quantities exceeds a predetermined value. In differential relay scheme circuit, there are two currents come from two parts of an electrical power circuit.
Most of the relays operate when any quantity exceeds beyond a predetermined value for example over current relay operates when current through it exceeds predetermined value
There were no mistakes just the absence of proper solution and explanation
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