what will happen if we will not use commutater means if we will give dc to the windings in dc motor

1 Answers  

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how does induction motors works.

1 Answers  

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in which material resister are made?

1 Answers  

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why use in & out Diesel line in dg set.

1 Answers   NHPC,

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what is the function and use of oil filled cables specify its advantages and disadvantages

7 Answers   Alstom,

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why should the primary of transformer be connected in delta in a heat run test?

0 Answers   Bhel,

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Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

0 Answers  

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with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....

0 Answers   Divis Laboratories,

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what is the function of supervison relay?Draw its wiring diagram.

2 Answers   IBM, R.R. ISPAT LIMITED,

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what is an impedance & inductance ?

4 Answers  

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any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

0 Answers  

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1)why the transformer rating in KVA insted of KW 2)why the secondary of ct is shorted and why the PT secondary is open

3 Answers  

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