Answer Posted / angel

1. The starter (which is simply a timed switch) allows
current to flow through the filaments at the ends of the
tube.
2. The current causes the starter's contacts to heat
up and open, thus interrupting the flow of current. The
tube lights.
3. Since the lighted fluorescent tube has a low
resistance, the ballast now serves as a current limiter.

What is difference between start imitation and start interlock for 3 phase motor protection ?

1796

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WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1444

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What is the limitation of kirchoffs law?

652

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Why have to use copper cable for local isolator to motor ?

1658

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what is the efficiency of thyristor

1126

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Why do we require transformer with less specific weight if supply frequency is increased?

1129

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How many methods use the load flow solution?

767

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How to run a three phase motor into single phase........

1574

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How to calculate cable size by using load.?? Any formula...

908

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What is the unit audit? if our Max demand is something and we found much more unit then how to improve our max demand?

1512

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We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

1423

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WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

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What is meant by system?

653

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How does HT work & Voltage required?

1746

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What is lifting power for 1 wb/m2 and 1 A magnet?

1693

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