Why a transformer Noise during its running condition ?

8 Answers   NTPC,

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i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.

1 Answers  

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what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 Answers   ABB,

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What is force on parallel conductors ?

0 Answers  

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is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

3 Answers  

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What is the two pole structure?

0 Answers   Foxconn,

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what mean by analog ,digital,numerical meters and relays? say the example?

0 Answers   ABB,

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Magnetizing current for induction motor compared to transformer is= A equal B more C less D depends on load

1 Answers  

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what is the formula of starting current of 3phase and 1 phase motor???

0 Answers   L&T, WFP,

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which of the following can produce maximum induced voltage..... (a)1amp dc current (b)50amp dc current (c) 1amp 60 cycle ac current (d)1amp 490 cycle ac current.

2 Answers  

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IN A HT CABLES i.e. 1.9/3/3 kv, what is the meaning of 1.9 and 3.3.

1 Answers  

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In short transmission line,why does the receiving end voltage is less than sending end voltage?

4 Answers  

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