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AC and DC - Essay Example

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This increases difficulty in safe handling which can pause a threat of electric shock to the handler. Heavy insulation proves to be an expensive material to implement (Grigsby, 2013).
16. Direct…
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AC and DC
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AC and DC al Affiliation: What is an AC - Alternating Current? What is a DC – Direct Current? How do they relate.
a. AC (Alternating Current)
Alternating Current entails the motion of electrons or electric current via a conductor in all directions, that is, the electrons keep switching directions.
The conducting agent is usually a wire connected within the electric circuit (Coles, 2012).
2. Diagrams of AC current
3. Current is flowing in both directions as you can see from the diagram.
b. DC (Direct Current)
A power system that simply represents the flow of electric current or energy in one direction, that is, unidirectional.
AC and DC can be related and vice versa, explicitly, DC (Direct Current) can be acquired from an AC (alternating current) source by utilizing a rectifier (Coles, 2012).
A rectify is a current-switching organization used in a circuit which comprises electronic elements that let electric current move in only one direction.
On the other hand, a DC (Direct Current) supply can be converted into an AC (Alternating Current) supply via using a motor-generator set or an inverter (Coles, 2012).
6. What causes the difference in the flow of current in AC and DC? Compare the level of energy and the frequency that can be carried by the AC and DC?
a. What causes difference in flow
The ability for reverse movement of current in an AC (Alternating Current) circuit is because there is usually a rotating magnet along the wire.
Current flows in one direction in a DC (Direct Current) setup because there is a steady magnetism long the conducting wire.
b. The amount of energy that can be carried
In an AC (Alternating Current): Can transfer a large voltage volume. It is safe for transference between big cities in different and far off geographical locations.
In a DC (Direct Current): The voltage within a DC supply cannot travel a long distance simply because the circuit loses energy with an increase in coverage.
c. The frequency level
In an AC (Alternating Current): The frequency usually ranges between 50Hz or 60Hz. This depends on the locality or country of operation.
In a DC (Direct Current): In this case the frequency of DC (Direct Current) is zero.
9. Where are the DC and AC obtained?
a. In an AC (Alternating Current):
An instance source for AC (Alternating Current) includes an A.C Generator and mains (Brennan & Goldberg, 2012).
b. In a DC (Direct Current) Setup
An example of a direct current supply usually uses a Battery or Cell (Brennan & Goldberg, 2012).
11. What is the major advantage and disadvantage of using transformers with AC (Alternating Current)? Why?
a. Use of Transformers with AC
i) Advantage
Electric transformers are mainly used to aid in either increasing or reducing the voltage throughput, a feature called stepping up or down of power.
It is advantageous since it allows the transmission of high electric voltage over long distance at a low current capacity (El-Sharkawi, 2012).
ii) Disadvantage
Requires an increased level of insulation to ensure and safeguard the handlers. This increases difficulty in safe handling which can pause a threat of electric shock to the handler. Heavy insulation proves to be an expensive material to implement (Grigsby, 2013).
15. 5. What are the various applications of AC and DC?
i. Various uses of DC
16. Direct Current (DC) circuits frequently have diverse types of fixtures, switches, connectors and sockets. It is applied mostly in this way since there is little voltage used (Herman & Loper, 2012).
ii. Applications of AC
17. AC is normally used to power cities and residential areas via the use of transformers which are usually located on streets on electrical poles. Consequently the transformers also convert very high voltages into lower voltages which is suitable for use with home appliances, for example, refrigerators, TVs and electric lamps (Keljik, 2013).
24. References
25. Brennan, T., & Goldberg, L. (2012). Handbook of electric current and electronics. Delhi: Academic Studio.
26. Coles, E. (2012). Electric current. New Delhi: World Technologies.
27. El-Sharkawi, M. A. (2012). Electric energy: An introduction. Boca Raton, FL: Taylor & Francis.
28. Grigsby, L. L. (2013). Electric power generation, transmission, and distribution. Boca Raton, FL: CRC Press.
29. Herman, S. L., & Loper, O. E. (2012). Direct current fundamentals. Clifton Park, NY: Delmar Cengage Learning.
30. Keljik, J. (2013). Electricity 3: Power generation and delivery.
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