Answer / sudip ghosh

Starter is used to initially ionize the gas in the lamp by
shorting the electrodes(in the starter) and then
immediately open it.It takes a fraction of a second to do
it.

Where as choke has inductor coils it limits the current
because the gas has very low resistance and the voltage
across the lamp is very high so it(inductor) prevents high
currrent to flow through the tube.

which type your UPS on line,off line give the reason?

2 Answers   Roto Power,

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when generator of a power plant is not connected to grid , by increasing the mechanical torque speed of rotor increases but when it's connected to load instead of increase in speed current increases , why?

1 Answers  

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Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?

0 Answers  

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What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV

0 Answers  

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Difference between stepper motor & induction motor.

1 Answers  

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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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what is the advantage of connecting capacitors in delta than in star?

1 Answers   NTPC,

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What is an electric arc?

3 Answers  

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will a transformer work when pulsating dc id applied to its primary?? what will be the result??

2 Answers   cemp,

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delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

0 Answers  

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How the unidirectional torque produced in dc motor

2 Answers   CGL, Sail,

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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