what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

0 Answers   NTPC,

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I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

0 Answers  

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How can we check ELCB trip current sensitivity How can we check earth resistance value

2 Answers  

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what is creepage distance in sub-station?

3 Answers   ABB,

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For backup batteries connection,which method is best? series or parallel ?  

3 Answers   ABC,

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give me name of current and volatge control device

1 Answers  

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Three way plug point is there ,in that plug why we need earth pin is bigger than compare with phase and nutral pins?

7 Answers   IIT,

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which motor is used in electric train...???????

27 Answers   ESPL, IOCL,

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what is difference between neutral and ground wire?

2 Answers   TCS,

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how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

0 Answers   Adani, Mahaveer,

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11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

10 Answers   Pfizer,

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Why Delta Star Transformers are used for Lighting Loads.

6 Answers  

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