Answer / sanu chaudhary

armature current of alternator depends upon the power
factor of machine .AT THE UNITY POWER FACTOR armature
current is minimum ,armature current of machine will
increse for same power if power factor of machine is
lagging as well as leading so it is desired to run the
machine near the unity power factor for optimum utilisation
of capacity of machine .in the leadind power factor machine
take reactive power from the infinte bus or grid and
machine is under excitation so it may be the cause of
panelty from power corporation due to reaciving of reactive
power hence we operate the machine near .9 lagging power
factor

does meager test perform on lightning arrester ? if doesn't then why ?

1 Answers  

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1.what type of wave is produced from i.online ups ii.offline ups iii.inverter.why don't we use inverter instant of offline ups for computer,what's the reason?

2 Answers  

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explain why the secondary terminal of current transformer should not be lift open circuited.

2 Answers  

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Dear all, is ther any body who can tell me about the setting of ACB(air circuit breaker ). what kind of it,s setting is and how to do it,s setting. also please tell me the setting of VCB(vaccume circuit breaker) . please tell me their setting,s. i will b very thank ful to all of u. Thank,s and Regard,s. Muhammed Ikram.

2 Answers  

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What are difference between earthing switch and earthing truck ? What is the operation philoshopy of earthing truck ? Wht are the component of earthing truck ?

2 Answers   Reliance,

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what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????

0 Answers   ABB,

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diameter of cable and core is doubled then the value of capacitance is

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Could you measure voltage in series?

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why capacitor is placed in fan

4 Answers  

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why we use capacitor in lighting fixer

2 Answers  

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What is the technical name of minute currents that i have been produced in moving electrical objects?

2 Answers   ITC Infotech,

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We are using 3core 11KV HT cable for same phase for generator outgoing, the cable leakage current is high and cable heated overly what is the remidy, if we use the 3core cable for 3phases the problem is solved are not?

1 Answers  

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