how caculate the pump head to maintain perticuler pressure of water and what would be the motor size in hp for the same?

1 Answers  

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An alternator is started without excitation then how much voltage it will produced at strating at full rpm??

4 Answers  

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What is the difference between earth fault and restricted earth fault protection?

1 Answers  

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why we use sinosidal voltage / current instead of others in system?

0 Answers  

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Why substation battery room is coulered black?

1 Answers  

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We have two 1 phase heating coils having same resistance of 25ohm, but during operation one takes 3A and other 6A Is it posiible Pls. explain

5 Answers   Bhel,

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Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected

0 Answers   Bajaj,

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what is the working principle of smoke detector in fire alarm system

2 Answers   Vijaya Bank,

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IR value for 30kw lt motor

1 Answers   Hofincons,

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what use marshalling kishock in power transformer?

2 Answers  

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please give me solution to rectify the emi(electromagnetic interference)

0 Answers   Powergear,

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why usa use 60hz and 110v?

2 Answers  

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