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 |
why there is a humming noise in transformer
what is called star connection and delta connection also purpose of this connections?
what is Diversity factor in electrical installations
What size cable is used for HT cable to the transformer of 630kVA, and the supply voltage is 11kV
if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?
in which material resister are made?
what is the reason the main breaker is trip during the motor is running? (some time the breaker is not trip)
Define the overload capacity of the motor.
HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER
how system voltage affect the power factor or vice-versa.
Why battery chargers are use in substation?
What will happen if we introduce negative feedback to a control system that uses a positive feedback?