why earth wire is needed in a wiring system

1 Answers  

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Which supply is using for train AC or DC & what is the voltage????????

16 Answers  

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why contactors are used ...? is contactors and relays are same ...?

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?

0 Answers  

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how to calculate the size of the cable for a particular rating 3phase induction motor?

1 Answers   Godrej, Megatron Solutions,

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What is self exciting?

0 Answers  

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1.How to calculate backup time from series connected battery of 12v dc with 26Ah for 2battery?

3 Answers  

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Define damping ratio.

0 Answers  

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why transformer rating is expressed in kva.

4 Answers   Electrosteel, L&T,

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What happen to generator if i have unbalanced load?

0 Answers   Reliance Energy, Sail, TCS,

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which plant has high load factor

10 Answers   APTransco,

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last 5 year rrb allahabad junior engg electrial engg question paper

0 Answers   RRB,

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