Answer / vaibhav mishra

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What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

0 Answers  

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WHEN SINGLE PHASE SUPPLY AS 220V, WHY THE 3 PHASE- 4 WIRE MEASURED AS 440 VOLTS INSTEAD OF 660 VOLTS (220 VOLTS PER PHASE i.e 220x3 = 660 volts ).

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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wat do knw aboot circuit breakers ?

9 Answers   IOCL,

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how to calculate the size of the cable for a particular rating 3phase induction motor?

1 Answers   Godrej, Megatron Solutions,

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What is the required value while doing the megering

1 Answers  

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Please sent me some previous year question papers of BSNL-JTO telecom and RRB in ELectrical Engineering to varshashahi@yahoo.com

0 Answers  

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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

0 Answers  

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1 unit or 1 kwh means how much kva

7 Answers   TATA,

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What is the mechanism of WTI

0 Answers   JBS,

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Atwhat condition reverse power relay will act?

0 Answers   Equate,

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How to set an overload in a motor?

3 Answers  

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