Answer / rajesh

Extra low voltages means reduced voltages that are used for lightings in parks,swimming pool to eliminate risks of electrcal shocks.

AC voltages below 50VAC and dc voltages upto 120V are cosidered as ELV.

Answer / kiran v

Hello mr sir low
voltage means not
upto 250v.... Low volt
means 1000 volts

Answer / k.prakashchandra

Low voltage is up to 250 volts.There is no standard for
extra low voltage.

it is used to measure the potial difference between two point?

2 Answers  

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what is ripple ??? what is harmonics ?

3 Answers   ABB,

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A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

0 Answers   VECL,

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How many power required for 1.5 to Airconditioner?

1 Answers   College School Exams Tests,

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how to select fuse in any circuit? if with fomula ?and examples also

1 Answers  

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if u want to buy a motor than what will be the configuration of that motor?

2 Answers  

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if we give DC suply to the AC motor what hapen

5 Answers   TATA,

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Why DG set rating in KVA

13 Answers   Crompton Greaves,

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If the primary side current of 33/11 transformer is 64 amps then what will be secondary side current?

2 Answers  

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Brief working principle of fluorcent tubelight,function of starter & choke.

3 Answers   Havells,

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in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

0 Answers  

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Q.1:What protection will be used on HT and LT side of 33/0.4 KV, MVA transformer. Indicate capacities of protective device to be used. Q.2:Which types of back-up protections are used in the power transformers? What do you understand by the term over travel in the relay? Q.3:How star and delta connected winding transformer are provided from earth fault

0 Answers   MPSEB,

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