Interested to Buy Any Domain ? << Click Here >> for more details...
what is subtransient , transient and study state ac components
- 2 Answers
- 10192 Views
- I also Faced
- E-Mail Answers
Answer Posted / ravi
These terms appear in the calculation of fault currents.
Common sources of fault currents are rotating machines,
i.e., motors and generators. An important factor in
detrmining the magnitude of a fault current is a variable
reactance that changes rapidly after the initiation of the
fault until it reaches a steady state.
Subtransient Reactance:-usually denoted as X''d (X double
prime sub d), is the reactance used to determine the
current during the first cycle after the occurance of the
fault.
Transient Reactance:-In about 0.1 second this
reactance increases to the
level known as Transient Reactance usually denoted as X'd,
and after 0.5 to 2 seconds it increases to the leven known
as Synchronous Reactance and denoted as Xd, and this
determines the fault current after a steady condition is
reached.
| Is This Answer Correct ? | 16 Yes | 3 No |
Post New Answer View All Answers
how to select automotive wire by mathematical equation with given current, vlotage and resistance
I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.
can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.
please tell me how a surge protector work on a DC 48Volt.? please describe briefly.
how to compute kAIC? with formulas...
Write down the design procedure of commutaj.
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?
Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?
What are the factors influence the choice of an electrc drive?
Why earthing is necessary for any equipment?
Please explain me abt PQ diagaram in the power sector.
Where burned of electricity,when,who, & why.
how do you choose the cable size as per amps rating & the voltage drop for the same.
why electronic instruments is more favorable than electrical?
