Answer / ashok

to produce a instantaneous high voltage to ignite the
tube.because tube has no filament ,it has only a gas inside
it . to ionize the gas tube need high voltage at starting.

Answer / sushil259

Actually, we all know that emf is induced in a inductor
whenever there is a change in current as per relation
e=Ldi/dt. so as we require high voltage approx. 600V to
start ionisation in the tube light, we change current with
the help of starter which helps in building voltage across
choke and when ionisation gets started, starter short
circuited and choke supply now is reduced tp approx 110V
which is required to light up tube. if normal supply i.e.
230V is given directly to the tube it will burn.

Answer / ramanjaneyulu

to produce instantaneyosly high voltage i.e 1100v then the
tube will glow the voltage will be redused to 110v

what is the working principle of induction motor

2 Answers  

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what is the contact resistance of vacume circuit breaker??

1 Answers  

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why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

10 Answers   ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

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How reverse power relay sense the power is reverse in the system.

2 Answers  

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how to select DG set for certain load?

7 Answers   ACC,

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How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

0 Answers   ABB,

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i want the formula of total eletical knowledgement

1 Answers  

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Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

0 Answers  

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how do you find making current and breaking current of the circuit breaker

1 Answers  

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In ac motor,when dc supply is given what happend to the motor?

3 Answers  

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what will happen while giving 2 phase supply to 3 phase motor

5 Answers  

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in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly

0 Answers   Shaifali Rolls,

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