Hello friends, Can anyone explain the concept of zones in Bus bar protection and how can we differentiate the main zone and check zone in Bus bar protection

1 Answers   ABB, NCC,

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two bulbs of 100w and 40w respectively connected in paralel across a 230v supply.which bulb will glow bright and why?

4 Answers  

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What is the equipment used to control the generator output?

4 Answers  

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what is difference Auto-transformer and ICT ?

1 Answers   CG, Descon,

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I have a 600VA numeriv digital UPS for computer only. It holds for 15 minutes only. but i am try to using home CFL Light I cant using UPS 2 or 3 secound automatic off .but computer ok how to change this is in to ups ?

1 Answers  

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Why is it that variation allowed in supply voltage to motors is (+ or -)10 %, whereas that in frequency is (+ or - )5 %

3 Answers  

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if u have to run a 300kw moter then what is ur choice HT or LT switchgear & explain why?

3 Answers   Aditya Birla,

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Why dose voltage rated at 11kva

1 Answers   TK Chemical Complex,

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why most of the modern day type electrical appliance have 2 pins rather than 3 pins?

4 Answers  

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Where double earthing is required? Is there any power specification to have double earthing?

10 Answers   Delphi,

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what is through fault?

0 Answers   KSEB,

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in india why we not use frequency above 50 hz for distrubuting power ?

1 Answers  

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