what is the operation of Control Module(CM),MONITOR Module(MM), MONITOR Module DUAL (MM2),Signal Module(SM),Isolator Module(IM), please some one reply me.. the operation and application of these in FIRE ALARM SYSTEMS...

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Why phase sequence must be same in any ht motor or generator circuit?if phase sequence doesn't same whatever will be affect on circuit?

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The potential difference between a phase and neutral is 230v , but the potential difference between two phases is 400v. why?

4 Answers   HCL,

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Salient pole alternator is more stable, why?

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Define damping ratio.

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How is the percentage impedence of a transformer fixed at design stage???

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calculation of lad carryinc capacity of 6mm2 cross section wire in 415 voltage circuit. What will be the amps.

0 Answers   MAHINDRA,

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why extension in transmission tower is made?

1 Answers  

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why Transformers power mentioned in KVA?. and why Generators and Motors power mentioned in KW?.

10 Answers  

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Can 60 Hz transformer be used inplace of 50 hz transfromer?

1 Answers  

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sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

0 Answers  

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Please specify the parts of VCB&ACB

1 Answers  

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