Why is it possible to vary the output voltage by controlling either the speed of the prime mover or the strength of the magnetic field?
What will be an ideal response?
Because the induced voltage into the armature depends on the rate at which the magnetic lines of force are cut per second, it is possible to vary the output voltage by controlling either the speed of the prime mover or the strength of the magnetic field.
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If a wireless service provider has 20 cells to cover the whole service area, with each cell having 40 channels, how many users can the provider support if a blocking probability p of 2 % is required? Assume that each user makes an average of three calls per hour and the duration of each call is an average of three minutes. (Erlang B values are given in the Appendix A)
What will be an ideal response?
Which of the following is most likely to be a health risk as a result of obesity?
a. high blood pressure c. osteoporosis b. type 1 diabetes d. allergies
Which of the following are the stages an insect goes through in a complete metamorphosis?
a. Egg, larvae, pupa, adult c. Egg, nymph, adult b. Egg, adult d. Egg, larvae, nymph, naiad, adult
____________________ is the act of repeating a set of procedures until a specified condition is met.
Fill in the blank(s) with the appropriate word(s).