Most materials that are good electrical conductors:
A) Will transfer heat by convection, but not by conduction.
B) Also tend to make good thermal conductors.
C) Are poor thermal conductors.
D) Will transfer heat by radiation, but not by conduction.
B
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Maria has 64 acres of peanuts with a yield of 2,800 pounds per acre. Her digger broke down after digging 5/ /6 of the crop and was in the shop for 6.75 days. The mechanics worked 21 hours on the digger at $80 per hour and replaced $2,875.87 worth of parts. She lost 5.3 percent of the remaining crop because she did not have the use of the digger. She sold her peanuts for $365 per ton. What did the breakdown actually cost?
What will be an ideal response?
The opportunity cost of an action is:
A. The value of the forgone alternative action B. Commensurate with the amount of time the action will take C. The EA value of that action D. Not worth considering
The graph in Fig. 1.33 represents the power drawn by an industrial plant between 8:00 and 8:30 A.M. Calculate the total energy in MWh consumed by the plant.
 FIGURE 1.png)
Answer the following statement(s) true (T) or false (F)
1. The input/output section, or I/O section, is the major reason that PLCs are so versatile when used with process machines or driven equipment. 2. Discrete I/O modules are types of modules that only accept digital or ON- and OFF-type signals. 3. Status lights are provided for each output point to indicate when that point has been turned OFF. 4. The analog output module changes Binary or BCD values generated in the PLC logic into analog signals using an RTD. 5. While it is important that the controller and programming unit be installed or mounted in a control center or other central location, the use of remote I/O racks allows the input and output modules to be installed close to the actual operating equipment.