How to increase the kvah ?

1 Answers   IGP,

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How to improve fuel cell in a distribution system?

0 Answers  

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What should be the voltage between neutral and earth of a UPS?

4 Answers  

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What is principle of Floroscent tube 36watt.

0 Answers   Diamiller, NDPL, Trident Hilton,

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A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

0 Answers  

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how to distinguish between ac motor and dc motor without seeing name plate of it.only seeing its getup look

3 Answers   Nahar, Siemens,

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What is the use of centrifugal switch in 1phase induction motor? Why is it so called?

2 Answers  

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in house wiring when two wires are same colour coding and there is no any connection one end how to find which wire is earthing wire

1 Answers  

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what is the difference between neutral and earth

11 Answers  

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how to calculate the formula of cable size if motor kw is given

0 Answers   APT,

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what is the meaning of neutral displacement ???

0 Answers  

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Why use the vcb at high transmission system ? Why can’t use acb?

0 Answers  

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