The ____ is the most common type of gear in use today.
A. helical gear
B. miter gear
C. worm gear
D. spur gear
Answer: D
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The difference between an SCR and a TRIAC is that:
A) An SCR can switch AC current but an TRIAC can only switch DC current. B) A TRIAC can switch AC current but an SCR can only switch DC current. C) A TRIAC passes three times as much current as an SCR. D) An SCR regulates AC voltage and a TRAIC only works with both DC and AC.
A periodic digital waveform ________
A) repeats itself at a fixed interval B) has an amplitude C) has both a HIGH and LOW levels D) All of the above
Carry the answer to two decimal places. The weight of a certain wire is 145 pounds per one thousand feet. What is the cost of 600 feet of this wire at $1.40 per one hundred pounds?
Fill in the blank(s) with the appropriate word(s).
Golden eagles prefer dense forests, but they are also found along woodland edges and even in open country during the winter
a. True b. False Indicate whether the statement is true or false