What is a differential amplifier?

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how we identify AC or DC machine at the time of seeing, with out use of name plate?

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Is there any standard guidelines/Criteria to design NGR/NGT.?

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can we light the mercury vapour (tube light)with out a 1).starter and 2).choke in our homes if yes explain how?

5 Answers  

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why the supply power frequency is 50hz in india? where as it is 60hz in US?

4 Answers  

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A 11000/415V distribution transformer is fed 415V upon it's LT side,Do I get 11000V upon it's Primary side ?

7 Answers  

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in 5 mva transformer 33/11 kv s/s what rating of capacitor bank is required & what is the fourmula for rating

6 Answers  

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In Indian Railways , how the AC motor is driven? Please explain clearly starting from the overhead 25kV supply.

1 Answers  

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how much load 15kva dg set can bear.with full explination and how to calculate?

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

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defination of generator

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What is the difference between 2 wires RTD's and 3 wires RTD's.Kindly explain the wiring diagram.

1 Answers   QAFCO,

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