Evaporative cooling is very effective:
A) In any climate.
B) In areas of high humidity like the southeastern United States.
C) In areas of low humidity like the southwestern United States.
D) In coastal areas with high humidity.
C
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For the motor in Problem 7.1 and for a fan-type load, calculate the following, assuming that the supply frequency is reduced by 20%:
a. Motor speed b. Starting torque c. Starting current d. Motor efficiency (ignore rotational and core losses)
Which of the following is NOT true of forward-bias in a diode?
A. Free electrons in the N-material and holes in the P-material both move toward the junction. B. N-material electrons move across the junction to fill the holes in the P-material. C. Negatively charged holes left behind in the N-material attract electrons from the negative voltage source. D. The free electrons that moved into the P-material continue to move toward the positive voltage source.
Describe and explain the basic function of the micrometer caliper.
What will be an ideal response?
The fourth step in using a Karnaugh map is to ____.
A. plot the logic functions by placing a "1" in each square representing a term B. obtain the simplified logic function by looping adjacent groups of 1s in groups of eight, four, or two C. "OR" the loops with one term per loop D. write the simplified expression