Answer Posted / ilononurb

Buchholz is a gas actuated relay which response if there is
any abnormality inside the transformer. Ex. If there a
incipient fault happens in transformer winding. arc causes
decomposition of oil that contains more hydrogen gas which
being light rise upward to bocholz relay. The gas is
collected to upper side of the relay. therby oil level drop
down in the B-relay that tilt the mercury switch that close
the alarm circuit.B-relay gives an alarm so that the
transformer can be disconected before the incipient fault
grows in to serious one.

How phase displacement change in the over current relay coils.

2433

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What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor

1625

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Explain M Var? Which types of problem occurs when reactive power increase at the time of full load of plant and at the time of synchronize of plant?

1773

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WHAT IS THE DIFFERENCE BETWEEN AN ACB & mccb 7 WHAT IS THE CRITERIA WHEN TO USE WHICH OF THE TWO

2325

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Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?

1817

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Is neutral transformer can be called as control transformer?

1980

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Why field rheostat is kept in minimum position while armature rheostat at maximum position?

1108

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Explain mechanical rotational system?

1133

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what is the ATS .And how it works.

1629

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Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

2044

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EHV current carrying parts need to have smooth finish,then how can a 245kv GIS with emery finish can run so long?

1897

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Define filter?

1128

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different aspects of voltage stability

2067

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explain wiring system

2580

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What is “pu” in ee?

1091

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