?In a gear train, the center distance between the two shaft centers is determined by adding the pitch diameter of the two gears together and dividing by ____.
A. ?8
B. ?6
C. ?4
D. ?2
Answer: D
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Two workstations are being considered by your company. Workstation 1 costs $12 000 new and $1 300 to operate and maintain each year. Workstation 2 costs $15 000 new and $600 to operate and maintain each year. Assume both will be worthless after six years and that the interest rate is 4.5 percent. Determine by the equivalent uniform annual cost method which alternative is the better buy.
What will be an ideal response?
If crankshaft endplay is higher than specified, which of the following should be used to correct the condition?
A. oversized thrust bearings B. undersized thrust bearings C. oversized main bearings D. undersized main bearings
Chickens were first domesticated in what is now:
a. southern Russia c. Southeast India b. western France d. northeast China
Bioremediation is an example of a service that an ecosystem can provide
Indicate whether the statement is true or false