Answer / p k gupta

AV MOTORS ARE EASILY MAINTAINED, COMPARED TO DC MOTORS,
WHERE BRUSHES ARE BEING USE.FOR HIGH TORQUE DC SERIES MOTOR
ARE BEST.

Answer / kiransinh.mahida

basic of ac and dc motor

what is the formula for backup time of online ups?

1 Answers  

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A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why

0 Answers  

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what is the difference between thyristor & IGBT?

2 Answers  

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in our transmisison sub station why we step down firstly 132kv\33kv then 33kv to 11kv. can we direct step down 132kv to 11kv.

4 Answers  

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what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

0 Answers   TATA,

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What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

0 Answers  

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How to prepare electrical preventive maintenance plan & shedule of machine tools.

2 Answers  

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Why the rotor winding is short circuited of induction motor

1 Answers  

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in pf lagging means current decrease by increasing voltage is correct or not ? reason ?

3 Answers  

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Compare jfet’s and mosfet’s.

0 Answers  

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advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

0 Answers  

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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