What is Relay? A. which transfer power B. opens or closes an auxiliary circuit C. used for short circuit only D. converts AC to DC 

1 Answer

Answer :

opens or closes an auxiliary circuit

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Last Answer : (i) Earth Switch   It's function is to discharge the ground capacitance when line is open circuited for maintenance purpose by isolator.) Earthing switch is inter - locked with isolator from the safety point ... 3-ph, 4wire, 400V) to give supply to control room, area lighting, staff quarters etc, 

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Description : Draw a neat sketch of earth fault protection of auxiliary circuit of electric loco. State the function of relay and isolating resistance.

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Description : Explain the construction and working of electronic overload relay.

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Description : Buchholz relay is used as a safety device with respect to which of the following? A) Audio transformers B) Oil filled power transformers C) Air core transformer D) None of these

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Description : The operating characteristics of a reactance type distance relay (A) a stepped waveform for increasing reactance (B) a straight line for a constant reactance (C) a circle for a constant reactance (D) a set of circles for variable reactances

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Last Answer : The buchholz relay is one type of relay which is used in the oil filled power transformerand is for the safety device .