For the power system in Fig. 11.67, find: (a) the average power, (b) the reactive power, (c) the power factor. Note that 440 V is an rms value.
 FIGURE 1.png)
 ANSWER.png)
You might also like to view...
In addition to heat and work flows, energy can be transferred as light, as in a photovoltaic device (solar cell). The energy content of light depends on both its wavelength (color) and its intensity. When sunlight impinges on a solar cell, some is reflected, some is absorbed and converted to electrical work, and some is absorbed and converted to heat. Consider an array of solar cells with an area of 3 m2. The power of sunlight impinging upon it is 1 kW? m?2. The array converts 17% of the incident power to electrical work, and it reflects 20% of the incident light. At steady state, what is the rate of heat removal from the solar cell array?
What will be an ideal response?
One important difference between fiberglass board insulation and duct wrap is that board insulation is _____.
a. sold in rolls b. rigid or semi-rigid c. used in cryogenic applications d. used in refractory applications
If reward for a behavior is to increase the occurrence of that behavior, it should occur
simultaneously with or immediately after the behavior. A. True B. False
How many years will it take an investment to double at an annual interest rate of 4% compounded quarterly? Express your answer in years to 2 decimal places.
What will be an ideal response?