A 40 kva transformer has a core loss of 400W and a full load copper loss of 800W. What is The proportion of full load at maxmimum efficiency?

1 Answers  

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What is the difference between Floot charge and Trickle Charge.

1 Answers   Torrent Power,

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why dc is not given to transformer

4 Answers  

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we have taken HV test of 2.5 k and Megger test on 11 kv HT cable.here it shows no fault but when we are charging the same cable with 11 kv supply why the VCB 11 kv gets tripped can anybody define the possible cause of fault ?

4 Answers   MAHINDRA,

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How Can you do Maintenance of ACB of 2000Amperes

0 Answers   TATA,

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What are the commercial names of overhead conductors used in India?

3 Answers   UPSC,

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What is difference between incomer & outgoing type Vaccum Circuit Breaker?

2 Answers   VBG,

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what is effect of 5amp fuse on 2mva pry protection of transformer

0 Answers  

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What is a signal flow graph?

0 Answers  

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If ct ratio is 250/1 and mtr is of 5 amp, what will be mf?

1 Answers  

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I hv a question regarding power factor improvement just after transformer. I request you to reply me plzz. thank you sir. My friend has a small unit of fabrication. in his factory the main load is a welding machine, lathe machine, grinding machine. this load is not continuous type. now our electricity board has installed 16 KVA, 11000/433 V transformer for our factory. In the energy meter (trivector meter) at LV side of transformer, i hv seen power factor value of 0.15 only when only 3 KW load was flowing. Further electricity board has suggested to install 4 KVAR capacitor at LV side after energy meter. Now my question is that if we permanantly install and switch on 4 KVAR capacitor after energy meter, during some load on transformer and also without any load on transformer, wht will be the power factor shown in energy meter?i dont want to get any penalty by electricity board, so plz suggest me if i can permanantly install and switch on the 4 kvar capacitor or not at LV side of transformer just after energy meter? Thank you again and awaiting for ur positive reply soon.

9 Answers  

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what is the requirement of commutator in a universal motor?

3 Answers  

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