What is the rms voltage? A certain circuit breaker trips when the rms current is What is the corresponding peak current? Military aircraft use Hz AC power, because it is possible to design lighter-weight equipment at this higher frequency.
What is the time for one complete cycle of this power? A North American tourist takes his Assuming constant resistance, what power does the razor consume as it is ruined?
In this problem, you will verify statements made at the end of the power losses for Example 2 above. A small office-building air conditioner operates on V AC and consumes Two different electrical devices have the same power consumption, but one is meant to be operated on V AC and the other on V AC. Nichrome wire is used in some radiative heaters. Skip to main content. Search for:. Calculate rms voltage, current, and average power.
Explain why AC current is used for power transmission. Example 1. Strategy We are told that V rms is V and P ave is Solution for b Peak power is peak current times peak voltage. We know the average power is Example 2. Discussion One-fourth of a percent is an acceptable loss. Discover the physics behind the phenomena by exploring magnets and how you can use them to make a bulb light.
Click to download the simulation. Run using Java. Conceptual Questions 1. According to Karl K. DC is constant and moves in one direction. This back and forth is what gives AC its name. Leaving aside lines and graphs for a moment, Berggren offers another way to distinguish between AC and DC by looking at how they work in the devices we use. The lamp next to your bed, for example, uses AC. This is because the source of the current came from far away, and the wave-like motion of the current makes it an efficient traveler.
If you happen to be a read-by-flashlight kind of person, you are a consumer of DC power. The efficiency of AC voltage is high as compared to the DC voltage. The impedance is the passive parameter of the AC voltage, and for DC it is resistance. The impedance means the opposition offered by the voltage to the flow of current. The term amplitude means the maximum distance covered by the oscillation and the vibrating body. The inverter converts the direct current into the alternating current.
Whereas, the rectifier converts the alternating current into the direct current. The transformer is essentials for AC transmission while it is not used in DC transmission. The ac voltage has phase and neutral whereas the DC voltage neither requires phase nor neutral. We can get DC from Ac current using the process called rectification and the device that does this is called a rectifier. C and D. Difference between points plz mention on serial ways with separate. Thanks a lot for helping in study.
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