Answer / manikumar agcet

Normally gas filled tubes ie CFL
(carbon florocent lamp) have
negative resistance
characteristics ,hence at the
time of starting they takes
very high current
consequently voltage may
drop.Hence to reduce this
high starting current we
connect Ballast.Ballasts have
positive resistance
characteristics.hence it
balance the tube resistance.

what is the use of starter in tube light?and what it contains

12 Answers   L&T, RRB,

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

5 Answers  

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why do the alternator doesnt have open circuited windings in armature???

1 Answers  

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HOW TO CALCULATE EARTHING SIZING?

0 Answers   L&T,

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what are the components of a start and stop motor control?

2 Answers  

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int a,b ; a=b=10 ; if(a>b){ printf ("%d",a)}; no error output is a=10

2 Answers   TCS,

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when we decide to use soft starter drive or vfd drive in mcc to operate apump?

0 Answers  

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what does work of electrical technician in industrial

1 Answers  

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in underground cables, we have a grading method called 'capacitance grading' why is it called 'capacotance grading' although we do not use any capacitor in it?

1 Answers  

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Can we get the shock if Power system is unearth means delta type take an rated voltage as 6.6 KV?

9 Answers   Reliance,

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What is the vector group of a transformer,how can it be found out?

0 Answers   Jindal,

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What is the importance of earthing?

0 Answers  

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