Why back emf used for a dc motor? Highlight its significance.

0 Answers  

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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how do you reduce the skin effect

2 Answers  

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why all selected supply voltage are multiple of 11

1 Answers   Gamesa, Suzlon,

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

0 Answers  

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why capacitor using the induction motor?

6 Answers   Kirloskar,

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which element is neglected during fault calculation? a)resistance b)inductance c)capacitance d)reactance

4 Answers  

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What is principal to reduce earth leakage current with isolation transformer? When isolation transformer is installed in input stage of system, earth leakage current is reduced. the reason is why the leakage current of 2nd stage of isolation transformer does not affect the 1st stage's leakage current. I would like to know the reason. As you know, earth leakage current is a kind of AC. So, How to reduce earth leakage current in case that isolation transformer is used?

2 Answers  

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what is diffrence between MH LAMP and HELLOZEN LAMP

1 Answers  

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What are the application of Under voltage release?

2 Answers   Techno Electric and Engineering,

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What is the working principle of servo motor? And explain it.

0 Answers  

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working of bucholz relay of a transformer

7 Answers  

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