what is the main difference b/w contactor and relay

2 Answers   Pace Pharmaceuticals,

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what is the affect of earth's magnetic field on the frequency used in aircraft???

0 Answers  

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Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

0 Answers  

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A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.

0 Answers  

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Merits & Demarits of Oil circuit & Air circuit breakers ?

0 Answers   Genco,

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how many mega ohms insullation of the cable can't be use when testing with megger tester for Low voltage cable 240V use?

3 Answers  

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why we use star connection on the primary side of a transformer?

5 Answers   DRDO, TCE,

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what is unbalanced rotating magnetic field?

1 Answers  

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How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.

0 Answers  

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why they were using TRIAC instead relay in some controllers and what is the advantages.

0 Answers  

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effect of decrease in excitation?

2 Answers  

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Can anyone tell me what will happen if AC & DC supply get mixed???

9 Answers  

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