The lowest level of industrial communication networks is ____ .
A. control bus
B. sensor bus
C. device bus
Answer: B
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The topsoil in Problem 29 is to be removed with a bulldozer. The estimated productivity is 30 bcy per hour and it will take 2.5 hours to mobilize the bulldozer. The total ownership and operation cost of the bulldozer is $47.12 per hour and the cost of an operator is $26.88 per hour. Determine the number of hours and the cost to strip the topsoil.
What will be an ideal response?
In planning a beef housing facility, future expansion is not important
Indicate whether the statement is true or false.
Iron core inductors ____.
a. are not susceptible to hysteresis loss b. can be used for high-frequency applications c. do not provide a good magnetic path d. produce more inductance with fewer turns than air core inductors
A certain medical imaging device commonly referred to as “ultrasound” creates sound by oscillating with a period of 0.4 µ . What is the frequency of this oscillation?
What will be an ideal response?