In a incandescent bulb, if the glass is punctured, and then power is supplied, the tungsten filament blows up with a flash.Why?

2 Answers  

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What Is the Difference Between Lightening Spike and Lightening Arrester?

1 Answers  

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what is neutral grounding? why is it required? what is neutral grounding resistor and how is its value calculated??

11 Answers   NTPC, ONGC,

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how moving coil indicator works?

1 Answers  

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What is the use of core in the transformer?

19 Answers  

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how to calculate neutral current in three phase four wire system

1 Answers   Auto Meters,

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Which Motor used in Fan's Motor ?

3 Answers   Matsui Technologies,

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Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?

0 Answers  

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difference between silent and non silent pole rotor?

3 Answers  

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Dear sir, I am working in wind mill division , pls explain Pls explain in details with formula My question is Wind speed 3.5 M/s Gen RPM is 1500 ( 25 K/w Production ) Wind speed 12 M/s Gen RPM is 1500 ( 220 K/w Production ) Why in 3.5 m/s generation was low , why in 12 m/s generation was high , Pls dont explain wind force or wind density , that one already i know For the above question RPM was same why the KW was different Answer : 1. Its depends on the density ( Force ) of the air Sir , Pls explain wit Formula sir

1 Answers   Vestas,

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why transformer does not obey ohm law?

27 Answers  

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How many types of protection relays are there based on the characteristic?

0 Answers  

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