Answer / manikandan krishnan

As it name says Relay contacts gets locked when there is a fault in the circuit.And it is the kind of mechanical switch. Once fault is cleared then only we can able to make the circuit closed by resetting the latching pin in the relay manually.without clearing fault , it wont allow to energize the closing coil of the breaker(ACB) even though u try to reset.

Why is it that polarization index type test is required for MV and HV motors and not for LV motors?

3 Answers   La-Gajjar Machineries, Qatar Airlines,

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hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

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boiler is running in rankine cycle and deisel generator is....?

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Why we use startor to the motor?

5 Answers   Bhel,

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how we can save electrical energy in industries,please give some inputs

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If one 10 Hp 3phase induction motor connected in 380volt 50Hz. and again its connected to 380volt 60Hz. howmuch currrent and power take on both time?????

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how to setting voltage RTCC panel

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what is the potential difference between line and earth?

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How to identify phases in the transformer like motor and AC generator but one condition without phase indication like(RYB,UVW)?

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Why the transformers are rated in KVA ? in new view

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Can double compression glands be used with regular cables?

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

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