what is skin effect? why is it absentin dc system
Answer Posted / shiny
The tendency of the AC current to concentrate along the
surface of the conductor is called skin effect.
The apparant resistance of AC is always higher than
DC .The alternating magnetic flux created by an ac current
interact with the conductor , generating a back emf which
tend to reduce the current in the conductor . The center
portion of the conductor is affected by the greatest
number of lines of force.The electromotive force produce in
this way by self inductance varies both in magnitude and
phase througr the cross section of the conductor, being
larger towards the centre and smaller towards the outer .so
the flow of current is maximum in the outer surface of the
conductor ,called as skin effect
In dC there is no inductance an dno skin effect.
Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
difference between main metering kiosk and check metering kiosk
what is the minimum voltage require to injure our body?
What is the drawback of class b amplifier? How is this minimized?
What is the cut-off rate?
Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.
IN 1000kva transformer where the oil and winding temperature sensors is connected
Showing results for capital, machinery, stock,wages, carriage in words, salaries, factory rent, repairs, fuel and power, buildings, debtors, sales, purchases, creditors, return outwords, return inwords, drawings, discount allowed, discount receivable, office expenses, bills payable, bills receivable, cash in hand, cash at bank, office rent comes under debit or credit
How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???
What are gain margin and phase margin?
Can an inverter be used as a converter? How?
I PURCHASED A DEISEL GENARATOR SET OF AVR TYPE& RATING 125KVA BUT SOME TIMES THE OUTPUT VOLTAGE IS FLUCTUATING WHAT ARE THE PROBABLE REASONS GIVE ME
what is the difference between unarmoured & Flexible cable? How to identified?
What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!
i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.
why ahould you show client/engineer activities clearly on the project plan