Why AC is preferred over DC for power transmission over long distances?
Answer: Ac is more preferred than dc because it is easy to maintain and change the voltage of ac for transmission and distribution purpose. Plant cost of ac transmission is much lower compared to dc transimission. When fault occurs it is easy to interrupt ac supply.
Why is DC not used for transmission?
DC(Direct Current) is not used over AC(Alternating Current) in transmission because DC goes heavy attenuation while transmission over long distance as we do not transform it from Low Voltage (at which it is being generated) to High voltage (for transmission over long distance(I will explain…)) by some direct mean …
Why can’t DC spread long distances?
The main reason is that the Skin effect in AC systems increase the conductor size. However, in DC, the conductor requirement is lower as there is no skin effect. This reduces the conductor cost. There is no flow of reacti.
What are the disadvantages of AC over DC?
(i) Alternating voltages cannot be used for certain applications e.g. charging of batteries, electroplating, electric traction etc. (ii) At high voltages, it is more dangerous to work with AC than DC.
Which is more useful AC or DC?
DC power is significantly more energy efficient than AC power. DC motors and appliances have higher efficiency and power to size characteristics. DC-based lighting (LED) is as much as 75% more efficient than incandescent lighting.
Does AC travel further than DC?
Does AC in Long-Distance Transmission Travel Further Than DC? As discussed in the previous section, it is not true that AC travels farther than DC; it is all because AC can be transmitted with less power loss. Resistance in the transmission cables and wires is the same, and heat is produced by the current flow in them.
What are the advantages and disadvantages of AC transmission over DC transmission?
In AC transmission system, the power can be transmitted for long distance and in DC transmisson system, the losses are low. In AC transmission system, the power can be transmitted for long distance and in DC transmisson system, the losses are low.
What type of transmission is better between AC transmission and DC transmission?
4. Since there is no inductance and capacitance, the voltage drop in a DC transmission line is less than an AC line for the same sending end voltage and load. Therefore, a DC transmission line has better voltage regulation. 5.