What change would increase the power factor in Figure 12-2?
A) decreasing the value of the resistor B) increasing the value of the resistor
C) increasing the source voltage D) decreasing the source voltage
A
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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.
?____ is relatively easy to ionize and thus is suitable for alternating-current applications and easier starts.
A. ?Hydrogen B. ?Helium C. ?Argon D. ?Nitrogen
The ______________________ is nothing more than a large tank that both receives water from the condenser as well as supplying water to the condenser.
Fill in the blank(s) with the appropriate word(s).
One hertz (Hz) is equivalent to:
A) One thousand cycles per second. B) One cycle per second. C) One cycle per minute. D) One thousand cycles per minute.