Answer / praful nandankar

Cylindrical poles have uniform air gap,small diameter and
long axial length. They are used for tubogenerators having
high rotor peripheral speed.On the other hand, salient
poles have minimum uniform reluctance along d-axis and
maximum reluctance along q-axis.They have non-uniform air
gap,larger diameter andsmall axial length. They are used
for hydrogenerators having small rotor peripheral speed.

Answer / icemmann.sk

Describe how a salient pole / projecting pole rotor
differs from a cylindrical rotor and state the
application of each rotor respectively

Answer / sayan

Cylindrical pole rotors are used in a place where rotational
speed is above 1000 rpm and below this we use Salient pole
Construction.

I have 10 amp MCB for my air conditioner of 1.5 ton capacity. When I connect the ac direct it is started running but when connected through stabliser the Mcb Get trip and air conditioner couldn't start.please confirm whether Mcb is required to be upgraded to 20 amp. There is no fault in ac and the stabliser. Please advice the reason of tripping the mcb when connected through the stabliser.

1 Answers  

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why is that a 4*4mm cable,is always powdered internally

3 Answers   Construction, L&T,

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is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?

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Everybody Knows What is ACB, VCB but anybody tell me what is ST?

7 Answers  

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Why do you get a typical sound when the transformer is put into operation?

4 Answers   IIT,

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model question paper for supervisor trainee

0 Answers   Bhel,

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I NEED RRB CHENNAI (JE ELECTRICAL) QUESTION PAPER FOR LAST 5 YEAR AND I NEED RRB (JE ELECTRICAL) SYLLABUS.PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in

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how to calculate generator capacity?(kva)

2 Answers   SMEC,

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How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.

0 Answers  

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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To prevent the mal operation of a differentially connected relay while energizing a transformer, the relay restraining coil is baised with (a)second harmonic current (b)fifth harmonic current (c)third harmonic current (d)seventh harmonic current

2 Answers  

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what is ALF and ISF in current transformer?

1 Answers  

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