A transformer has negative voltage regulation when its load PF is A zero B unity C lagging D leading

1 Answers  

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How is the air circuit breaker quenching the arc. If it is by air means, where is it come from?

1 Answers  

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What is the distance between the EHV lines and also the distance for earth ??

2 Answers  

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explain the function of brush less dc motor?

0 Answers   Bhel,

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why two wires are wound alternately to each other in single phase wires?

1 Answers  

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

0 Answers   Bhel,

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how choose conductor &caple&wire depending upon the load

2 Answers   HCL,

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if 1hp jet motar drop voltage when start from 220v to 120v give the reason and solution.

1 Answers  

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what is meant by surge? what we called for high currents?

0 Answers  

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which type of starter is suitable for single phase motor ?

11 Answers   IOCL,

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm

13 Answers   Essar, PSPCL, PSTCL,

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by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

0 Answers   HP,

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