difference between earthing and grounding?

2 Answers   ABB, Bharti, L&T,

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write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

0 Answers  

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it says in neutral wire current flows under normal condition, but when we put tester it wont glow, why?

7 Answers   HCL,

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We are dealer in Maharashtra State & We have recd. form C from dealer of Maharashtra State against our E-1 form. Now assessing authority is asking for counterfoil of our E-1 form. But, our E-1 form counterfoil is misplaced somewhere & assessing authority is disallowing the C form which is recd. from Maharashtra State.Please let us know the option for allowing C form?

1 Answers  

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How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

0 Answers  

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Why the brushes used in dc machines are made of carbon not from other metal?

2 Answers  

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what is thyristor, how is it works

1 Answers  

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Why we use a H.T. Fuse from a thick wire, on other side we use high rating of cables? & Why we use less Sq. mm Cable on H.T. side , on other side we use Large Sq. mm cable?

1 Answers  

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How many types Switchgears?

4 Answers  

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in an industrical wiring, why we are using lighting DB and Power DB separately?

3 Answers  

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where was current transformer protection units used and why??

0 Answers  

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how can we rotate a single phase motor (without cap.)in reverse direction?

2 Answers  

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