How to reverse the direction of a DC motor ? By reversing the Armature wires or by reversing the field wires

2 Answers   KFC,

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How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

1 Answers   Siemens,

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where is used dc volage transformer,and what is highest capacity of transformer

2 Answers  

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what is difference between 5A and 100A CT constructional wise and operation?

1 Answers  

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Define what is the function of anti-pumping in circuit breaker?

0 Answers  

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what is the principle of generator, motor, and transformer and explain the definiton of flemings left hand rule , right hand rule and ohms law

2 Answers   NFCL,

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RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

5 Answers   Hakel,

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what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

0 Answers  

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what type of oil is used in transformers? a)conduting b) insulating

25 Answers   ABB, LGS,

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how the inductor will work on dc supply?whether it will work or not?

11 Answers   NTPC,

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Brief working principle of fluorcent tubelight,function of starter & choke.

3 Answers   Havells,

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How to Calculate KA Rating of Main LT Panel

0 Answers  

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