What is the different between buchholz relay and pressure relief device?

2 Answers  

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which type of winding is used for high voltage & low current?

1 Answers   GEB,

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Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

0 Answers  

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what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

0 Answers  

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

1 Answers  

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What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.

3 Answers   ABB, HAL,

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What is the difference between electric and electronic circuits?

11 Answers  

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what is the difference between elcb and rccb ?

0 Answers   Trident,

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how we decide scurt (disc) of insulator with respect to kv rating

1 Answers  

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What is PEC??Applications........

0 Answers   Emerson,

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why the 4 terminal are named as main, line, common, voltage (M, L, C, v) of a wattmeter?? why not its nameed as A,B,C,D??

6 Answers   Jindal,

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What is the basic difference among IPS,UPS,EPS?

2 Answers   ABB, Navana,

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