Answer Posted / suresh

an isolator on or off doing by manualy but breaker tripps
autometicaly depend on trip setting

what are the tests comes under the type test, what tests comes under routine tests.

1517

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Write down the design procedure of commutaj.

2174

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We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's

1973

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What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?

1936

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if a.c supply is given to the motor,, what happen?

2214

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how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

2323

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when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

2123

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why single CT used in DOL starter power circuit?

2575

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At full load wat is the motor p.f And at no load will is the motor p.f?

2181

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What are the limitations of Kirchoff's laws?

1642

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

2799

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If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

1120

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does any one know where we can purchase insulation oil for high voltage oil filled cables

2400

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what is a vector protection in transformer

2084

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Define phase cross over?

1191

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