Answer / razaq ali

because electrical heater is constant load with constant
current.
overload relays are used when load current increases due
due to increase in load.

I want to know what is the short circuit level when 8 NOS 2000 kVA, 415v, 50hZ generator connected in paraller

1 Answers  

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can u light up bulb with out useing neutral

12 Answers  

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Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.

0 Answers  

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why maintenance batteries used in DG sets not in MAintenance free Batteries.

4 Answers  

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Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

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I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

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I have 200 KVA Isolation Transformer for UPS input side. & ups was having 48% load, suddenly got short what will be the reason.

1 Answers   Mukand,

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How phase displacement change in the over current relay coils.

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why the active power flow of some line is increased when the active power of out is cut ?

0 Answers   TAFE,

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Why back emf used for a dc motor? Highlight its significance.

0 Answers  

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which technique servo motor tested o.k or faulty ?

1 Answers   ABB,

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why the rating of transformer in only KVA not in others?

7 Answers  

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