Answer / ravi

Basiclly motor ,which converts electrical energy into
mechanical energy. In electricaly the term is to be
mentioned as "watts" .By considering as mechanical energy
commonly it is HP.

Answer / dharanidharan

In earlier days, The power is measured by using horses.
They made horses to lift weights (say 550 pounds) and found
the capacity of the horses. They substituted engine power
by number of horses and said 10 HP or 20 HP.........

where we use zero sequence current transformer or core balancing ct.

2 Answers  

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Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.

2 Answers  

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while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries

1 Answers  

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sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

5 Answers   L&T,

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In UPFC,What is the need for Dc link ( DC capatior)?

1 Answers  

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i work as a technician at a private company.. i used to take amp reading for certain appliances such as air con.. the problem is when i clamp the neutral, wire there is a current reading.. from my understanding for single phase system neutral should not have current unless if the circuit is not complete.. yet the air con still work

3 Answers  

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what will happen if ac power supply is given to the rotor of an alternator

1 Answers   Goldman Sachs,

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how many earthing required for ups, what should be the earth voltages

9 Answers   Juniper Networks,

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Why saturation region slowly shifted in the left side?

0 Answers  

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Do you know the overhauling of a motor?

12 Answers   EdCET, Mecon,

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Explain the Term in CT Name Plate – Class: 5Ps

3 Answers   Divis Laboratories,

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I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

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