Answer Posted / rahul thakur

A commutator serves two purpose in DC Machines-the first
one is to convert alternating quantities into direct
quantities and vice-versa and second is to keep the rotor
or armature MMF stationary in space.

What are the protections for safe running of electric generator?

2188

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1.4 What is meant by CT knee point voltage and how would you determine it

1629

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What is the normal phase difference between the voltage and the no-load current in a transformer?

1181

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A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why

1902

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Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

1862

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how to convert lv line to hv line and viseversa, any losses will occur during this process

2017

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how to set relay setting? and example calculation...

1968

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Define norton equivalent circuit?

990

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I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

2389

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Why in 6 KV XLPE cable termination kit used and why not in 380 V xlpe cable same is not used

2578

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How can two 3 phase transformers of same KVA and Voltage be connected in parallel?

1803

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Why the moulded plug comes with domestic appliances instead of assembled plug like anchor, Vinay 5/15 A.

1967

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Discuss the effect of sudden loading of an induction motor

1815

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1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

2547

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Y phase plates are used in transmission line??? what is there need???

2860

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