Interested to Buy Any Domain ? << Click Here >> for more details...
Why effective AC resistance is more than DC resistance of a
transmission line?
- 9 Answers
- 25082 Views
- HCL, ONGC, I also Faced
- E-Mail Answers
Answer Posted / mohd. kashan wali
AC resistance is greater than DC resistance.
The reason is:-
In AC, Skin effect occurs which means that current tends to flow through the skin of the wire than through the inner core,so net area of current flow in AC tends to reduce.
And Resistance is inverse proportional to Area, and as the net area of current flow decrease, so NET AC RESISTANCE INCREASES.
Now in DC current, there is uniform current flow.So net area of current flow through conductor is greater than AC,
THUS DC RESISTANCE IS LESS THAN AC
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors
PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.
why Lightening Arrester Probe sharp at Top of telecom tower.
solor panels arrange some angle,panel is flat fitted energy was produced or not why?
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.
which capacity of RCCB used for five thousand watt electricity load?
explain comutator action in detail.thanks
A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
What is the range of the stator resistance of 3 phase induction motor?
Starting current of a 10 HP induction Motor is ______ time’s full load current.
is there any device that works properly accept relay, it may be fuse but if i want fuse of 33kv 300 amp it is avaliable, pls give me details
why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.
in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know
What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA
I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions
