Sharp-tailed grouse males have a conspicuous _____ air sac, which they inflate and display during courtship
a. blue
b. large
c. purple
d. small
d
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Show that a series LR circuit is a lowpass filter if the output is taken across the resistor. Calculate the corner frequency fc if L = 2 mH and R = 10 k?.
What will be an ideal response?
Which one of the following types of gears is commonly used when a large speed reduction is required in a small space?
A. helical gears B. worm gears C. hypoid gears D. crossed helical gears E. none of the above
Tech A says bearings pressed onto the axle can be removed with a hammer and a drift punch. Tech B says bearings can be removed by cutting the bearing with an oxyacetylene torch. who is correct?
A. a only B. b only C. both a and b D. neither A nor B
Which statement is TRUE about thermostats?
A) Thermostats often cause overheating B) The temperature marked on the thermostat is the temperature at which the thermostat should be fully open C) The temperature marked on the thermostat is a temperature at which the thermostat should start to open. D) Both A and B