what is difference b/t ac current and dc current

Question Posted / keyurlakhani

4 Answers
7750 Views
L&T, Meghana Engineers, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is difference b/t ac current and dc current..

Answer / er. sanjana singh

ac current is flow in alternating nature & it have frequency.
dc current is direct current and flow in straight direction & dc current has no frequency..

Is This Answer Correct ?

11 Yes

4 No

what is difference b/t ac current and dc current..

Answer / sureshkumar

ac current has skin effect,corona losses and dc current does not having skin effect,corona in transmission lines

ac transmission can change voltage levels by using step-up transformers and in dc it is not possible

Is This Answer Correct ?

1 Yes

0 No

what is difference b/t ac current and dc current..

Answer / sureshkumar

in ac we can change voltage levels by using power transformers
and in dc can not change voltage levels because we not using power transformers

Is This Answer Correct ?

0 Yes

0 No

what is difference b/t ac current and dc current..

Answer / syamkumar

ac current changes it's magnitudeand it has frequency but
dc cureent doesn't changes it's magnitude and it didn't
have frequency.

Is This Answer Correct ?

2 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

explain how hunting can be reduced in an alternators?

3 Answers

why to use freewheeling diode ( diode in revers bias mode) across dc coil

2 Answers

whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

9 Answers Electra Power, Essar,

what is the relation between the size of the machine and the frequency? (when the frequency increases the size of machine will increase,why?)

2 Answers

Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem

3 Answers

how to calulate multiplying factor if meter ratio is /5 ampere and ct ratio is 100/5 ampere.(our supply is 3 phase 415 volts)what is multiply factor?

3 Answers Vivek Engineers,

hy i need help with LabView, I need a sample code of LabView to download serial data from the Intellivue Patient Monitor to PC. Thank you in advance.

1 Answers

a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm

13 Answers Essar, PSPCL, PSTCL,

what is sevice settings for mccb?How can be it setted?

0 Answers Bhel, Minda,

Why DG set rating in KVA

13 Answers Crompton Greaves,

how to calculate optimum loading for transformer?

6 Answers

1) How to calculate battery backup for ups as well as solar with complete formula elaborately......

2 Answers

For more Electrical Engineering Interview Questions Click Here