Answer / mahavir jagdev

The function of the filament at both ends of the flourescent tube is to ionize the gas inside by heating for producing the light. Once the gas is ionised then the filaments have no role to play. The choke and the starter as just means to produce the high voltage spark due to the inductance property of the choke, which later on just reduces the AC voltage for the tubelight to around 90 volts which is enough to stay ignited.

IF 5000amp current on LT 440V. then how much it will draw amp on HT 11KV side

10 Answers  

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Earth Is a very good conductor or very good insulator.? If a good conductor then why current donot flow through small piece f earth and if a good insulator then why we use it as return path in lines.???

6 Answers   L&T,

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In VSD (variable speed drive)I/P and O/P connections given wrongly what will happen?

5 Answers  

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1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?

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can any one explain about when EB supply failed then how the load will transfer onto DG's step by step.

1 Answers  

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What is the si unit

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Why LVDT have secondary windings connected in differential 1. Higher out put 2. Based on the out put voltage-/+, helps to identify the direction of displacement 3. To establish a null/ reference point

1 Answers   GATE, PSPCL,

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what is KSR type transmission tower? What is LSR type transmission tower?

0 Answers   Ford,

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I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??

1 Answers   Orion,

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what is leading and laging please in details

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if dc excitation is used to produce manetic flux in rotating machines then ehy it is not used in transformers.

4 Answers  

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what is the function of impulse relay

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