Answer / pravesh

the difference between the electroic and ordinary regulator
is that in electronic reg. power losses are less i.e. for
as we decrese the speed the electronic reg. give the power
needed for that perticular speed but in case of ordinary rh
type reg. the power wastage is same for every speed and no
power is saved

Answer / bhanu pratap

in electronic regulator triac is employed for speed cntrl.
by varying the firing angle spreed is cntrled but in
rheostatic ctrl resistance is decreased by steps to achieve
speed cntrl

Answer / leo thomas

in electronic regulators diac or triac is used.These
devices conducts only some firing angle that means we are
utilizing only a part of the sine wave,not completely.
In rheostatic control total sine wave using ,here energy
wasting

Hi,Any one has idea regarding the KPTCL Recuirtments for AE'e & JE's for the year of 2009-10???Kindly help in regards..

2 Answers  

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The reason why the sending end and receiving end voltage sare almost equal when capacitive load is added.

4 Answers  

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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

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What is the formula to calculate capacitor bank rating for a certain load.

2 Answers  

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why we step/down voltage in multipul of 11kv?

4 Answers   Siemens,

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What is difference between Ac Voltmeter And Dc Voltmeter ????

2 Answers   KCP,

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Why used in netural grounding transformer for netural side

2 Answers  

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if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.

0 Answers  

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from 33kv to 440v 2mva transformer how much full load current will be at ht side and lt side and which range of ctpt will be used?

1 Answers  

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explain safety measures in alternator?

0 Answers  

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what is meant by tranformer impedance?

0 Answers   Synergy,

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it is used to measure the potial difference between two point?

2 Answers  

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