Answer / amritpal singh sidhu

The principle of Alternator is Electromagnetic Induction,
i.e. whenever a conductor cuts the magnetic flux an emf
will induce in the same conductor.
Same process is done in alternators, as we rotate the rotor
of the alternator, due to that its conductors cut the
magnetic flux & emf is induced in the rotating conductors,
which is collected with the help of slip-rings......!

Answer / zia abbas

When conductor cut the magnetic feild then emf produced in
the same conductor when conductor cut the line of forces at
90 degree at time maximum emf produced in that conductor
and during that time when line of forces and conductor are
paralled to each other then at that time creating emf will
be zero

what is the cable size we can use for 11kv and 33kv ?

3 Answers  

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why core losses and copper losses does not depend on power factor?

5 Answers  

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why an ac solenoid valve attract the plunger eventhough we interchanges the terminal?will the ploes changes?

1 Answers  

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why do the core of transformer saturates???

1 Answers  

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Why ACB is used in LT why not in HT and why VCB is used in HT why not in LT

1 Answers   GE,

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how does damper winding produces torque in synchronous motor?

1 Answers  

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1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

0 Answers   TATA,

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I did oil BDV test of 1600 KVA trafo 20KV/400V as per IEC 156. Result is 1) 58 KV 2) 58 KV 3)40 KV 4) 50 KV 5) 58 KV 6) 18 KV. Avr is 47 KV. Can we say oil is still ok even in the 6th test BDV is 18 KV ?

1 Answers  

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why any inductive load need free wheeling diode?

4 Answers   Essar,

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what is ht breaker

8 Answers  

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i want to ask that as everybody knows that in star connection on star point is called neutral. my question is that why on that poin called neutral. what is the reason behind it. what is the logic behind it. i heared somewhere that on this point all phases current become zero thats why. if this answer is right then prove why on that point is current become zero. if this answer is not right then tell me the right answer. post ur answer here or on my mail address. m.ikram786@yahoo.com m.ikram555@gmail.com. thanks.

1 Answers  

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rajha power sector details

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