Answer / sroy

electrical and eletronic choke both regulate the current
flow to the lamp....whereas starter is not required in case
of electronic one. it saves energy as the ac period of
current is shorter than relaxation time required to
deionize the mercury atoms. in electrical choke ions will
have to be reionized ,,but in electronic they dont allow it
to settle down and hence requires less energy

is there any chance to get shock from the transformer oil at the time of maintenance due to its dielectric property. . ?

6 Answers   Bhel,

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What different between kw and kva. why maser AC in kva.

3 Answers  

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what are protective device needed to power a 360W ,50hz,240v,single phase,0.65 pf universal motor

1 Answers   L&T,

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Can u tell me design of switch yard

0 Answers   NTPC,

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what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth

0 Answers   Conan Minerals,

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What is the voltage violating limit to be considered for load flow study? What is acceptable deviation limit according to relevant standards?

1 Answers  

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why should small green grass ans small plant should not be there inside the transformer Yard in the factories

0 Answers   Riddhi Siddhi,

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7. Why AC motors, AC bulbs etc... are donot operated by DC signals? and Why DC motors, DC bulbs etc... are donot operated by AC signals?

2 Answers   Bhel,

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Can a transformer be used as voltage or current amplifier?

3 Answers   BPDB, REB, Riaz,

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Why no-load primary current is very small as compared to full load current in transformer (as 1% of full load current?

5 Answers   NTPC,

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why we avoid parallel operation of diesl generator?

4 Answers  

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stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate

0 Answers  

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