Difference ac and dc ?

Question

Accepted Answer

AC and DC are two types of electrical current with different characteristics.

AC stands for alternating current, while DC stands for direct current.
AC periodically changes direction, while DC flows in one direction.
AC is used for power transmission over long distances, while DC is used for electronic devices.
AC can be easily converted to different voltages using transformers, while DC requires converters or inverters.
Examples of AC sources include power grids and generators, while batteries and solar cells provide DC.

Accepted Answer

The main difference between alternating current (AC) and direct current (DC) is the direction in which the electrons flow:
Direct current (DC)
Electrons flow in a single, constant direction. DC power is usually obtained from batteries, solar cells, or AC/DC converters. DC is the preferred power type for electronic devices.
Alternating current (AC)
Electrons periodically switch directions, going forward and then backward. AC power is obtained from a generator or outlet. AC is the method used to deliver electricity through power transmission lines to homes and businesses. 
 
Here are some other differences between AC and DC: 
 
Voltage
In DC, the voltage is always constant. In AC, the voltage periodically changes from positive to negative and from negative to positive. 
 
Efficiency
AC power can travel farther very efficiently because power plants can easily generate large amounts of AC power. DC power does not increase or decrease as easily, and therefore cannot travel long distances efficiently.

Accepted Answer

Alternator current AC and DC direct current

Accepted Answer

Alternative current frequency has 50 hrtz and direct current frequency has zero

Difference ac and dc ?

Top RSPL Group Electrical Technician interview questions & answers

Popular interview questions of Electrical Technician

Top HR questions asked in RSPL Group Electrical Technician