which is better ac or dc?
Answers were Sorted based on User's Feedback
Answer / abu
Ac means Alternating current which is changing always with respect to time. .D.C means Direct currentwhich is not changing always with respect to time.
A/c having many losses like corona, ferranti effect during transmission. .In A/c transmission cost is high bcoz it emoploys with large trfrs. D.c is better for low loss transmission. . .In D.c there no P.F. also
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / linilbabu.ck
AC means alternating current of 230V/50Hz is long distance
transmision & It possible or heps of 50Hz signels applying
or carrying.AC supply causes power loss & its problems
solved with stepp-up transformer.DC means direct current DC
voltage power gain maximum(maximum current rating and
voltage rating) it doesn't long transmision. Nearest
transmision if DC voltage better than AC voltage.(need or
wated of powersupply)
| Is This Answer Correct ? | 3 Yes | 3 No |
what is the relation between voltage & frequency
What is I/P converter?
why the neutral point in connnection oscillates?
what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines
In 3 phase induction motor 1hp current rating is 1.5 amps constant ? is correct or not ?
what is the principal of starting of a three phase induction motor.
how to check ac servo motor
what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..
why transformers are sometimes kept on concrete benches..?
Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC
where we use stardelta starter and dol starter
In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)