what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

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Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

0 Answers  

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Whats the principle of lightning? How protection against lightning is achieved? Types of protection? How to select the height of lightning spike? as per the area.

4 Answers   HAL,

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How we calculate airgap between phases & terminal box of the transformer? any formulae.

1 Answers  

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two 100W/230V bulb are connected in series. what would be the voltage drop across 1 bulb

6 Answers  

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for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

0 Answers  

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if a.c supply is given to the motor,, what happen?

0 Answers   Bhel, L&T, MSEB,

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how tubelight circuit is connected and how it works?

7 Answers   Punj Lloyd Ltd,

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Why is the earth fault relay connected to the Yellow Phase?

4 Answers  

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If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

0 Answers  

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Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)?

2 Answers   Vedanta,

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how to wiring it with contactor and timer together

0 Answers  

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