Answer / murali

thumb rule 1KV we get 1Mohm. if suppose 415V motor we get 0.45Mohm.

Megger is the instrument name. it is insulation resistance value.

Answer / pradyumna171

megger value of any appleance should be 2 multiply with working voltage in kv plus 1 ie a 440 volt motor should have 1.88Mohm (2* .440 +1) , it is the minimum value. And megger voltage should be twice of working voltage of appleance.

Operation of isolators.

0 Answers   KSEB, L&T, Siemens,

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DGs fuel and lube oil filters are not equal to one another.Why it is so.For example one MTU enginee fuel filter is one and lube oil filter-02nos other DGs are more.Please explain

1 Answers  

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what is the rating of power generation in india?

10 Answers   Siemens,

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Why Power generation in India is at 50Hz while in America its 60Hz so is there any advantage/Disadvantage of this ??

38 Answers   Australia Visa, College School Exams Tests, Fiat, InfoPlus, L&T, NTPC, TCS,

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What is a dc motor?

0 Answers  

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an ac induction motor gets overheated when operated at a low frequency of 25 hz a instead of 50 hz. reason?

1 Answers  

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why a bulb glow when connected with two end phase and neutral respectively.

1 Answers   ACME,

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How conventional fire alarm system works?

1 Answers  

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circuit breaker work alone during fault condition or need any relays ?

4 Answers  

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bsec exam syllabus (mis)

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what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers  

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Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 Answers  

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