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.

Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com

2114

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WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

3573

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Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

2218

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What are the internal and external faults?

1112

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what will happen if frequency is below 50 hz?

2033

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What is the disadventage of gland earthing(power cable) if any. ?

2124

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How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?

1811

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List few applications of d.c series motor?

1135

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What is the meaning of Insulation H for transformers????

2144

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what is difference between 5A and 100A CT constructional wise and operation?

3574

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who can measure the size of power cable?

2164

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The height to which the liquid in a tank to be maintained for a certain constant velocity?

2006

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HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?

2102

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What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

1735

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What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?

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