Answer / guest

To find the cable size:
1.Decide the load ratings ie., voltage, FL current of the
load.
2.So that P = V*I*PF
3.Now apply ohms law, V=IR.
4.Now we have the resistance, as per the resistance we can
choose the cable. R= (permeability*Length)/Area of C.S

Why are the laminations insulated from each other?

0 Answers  

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in a transmission line if the load is suddenly increased in the receiving end of the system the phase shift will ?

1 Answers  

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Is there such a frequency as 440v 50Hz?

1 Answers  

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what is difference between DC and Ac

5 Answers   Birla,

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How will you Physically differentiate A.C and D.C motor?

10 Answers   BSNL, Polycab,

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A generating system will have a total capacity of 300 MW. Find the probable forced outage when the capacity is supplied by two 150 MW units. The operating probability of all units is P=0.98 and forced outage probability rate Q =0.02 .

0 Answers   BUET, VECL,

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. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV?

3 Answers  

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fuses rated by amperes but not power,why?

3 Answers   Blue Star,

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which type of motor is suitable for water pump?

1 Answers   IIM,

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why using in cable mm square which is mm & which is square why using mm & square.

1 Answers   Airtel,

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Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

1 Answers  

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Fot testing new star-delta 132 kw motor in electrical worshop.we should check in star or delta connection as we do not have higher capacity cable in worshop?

4 Answers   Adani,

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