Answer / sagar kumar

(b)-unstable.

what is the star delta connetion and how can do it a three phase motor with control witing with picture

0 Answers   Aurobindo, SA Kent, Wipro,

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in transformer star connection with neutral are shorted. is there is any effect.

1 Answers  

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what is meant by 3rd hormonics ?

0 Answers  

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what is the difference between electrical and electronic choke?

0 Answers   TCS,

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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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the resistance of wire having length X M is R OHEM if i streched the wire to dubble length what will be the resitance

3 Answers  

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What is the difference between reverse power trip & inadvertant trip?

1 Answers  

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2. What are the parameters of EHT sub-station?

0 Answers   APGenco,

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what is green house effect?

4 Answers  

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why we need to us lenz's law for synchornous motor

0 Answers   Tata Elxsi,

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Why machines are avoided to work is saturation region of B- H curve?

3 Answers  

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What is high frequency grounding????Applications........

1 Answers   Emerson,

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