The control bus is used by the microprocessor to coordinate its operations and to communicate with ________
Fill in the blank(s) with correct word
external devices
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Answer the following statement(s) true (T) or false (F)
1, An electrician must know the symbols and terms used in automatic control diagrams to be able to wire, install, troubleshoot, and maintain automatic control equipment. 2. Remote control of a controller uses contactors, relays, pushbuttons, sensors, and possibly electronics. 3. Magnetic switches used in controllers cannot be used with remote control and are expensive. 4. The manufacturing and materials-handling industries can predict maintenance with great certainty and help with failure analysis based on E stop systems. 5. SCADA connections and RTUs and HMIs are increasingly being connected through systems that uses a manufacturer-specific protocol for each component.
You need to calculate the cross-virial coefficient (B’12) for a mixture. You know that B’1 = - 0.0003 m3/mol, while B’2 = - 0.0006 m3/mol. What is a good estimate of B’12?
A. 0.00045 m3/mol B. -0.00045 m3/mol C. -0.000424 m3/mol D. 0.000424 m3/mol E. It is not possible to answer this without knowing the composition of the mixture.
?Technician A says that too much oil pressure can cause excessive oil consumption. Technician B says that viscosity goes up (oil becomes thicker) with lower temperatures. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Breeding animals more than eight years of age is not as productive as breeding younger goats
Indicate whether the statement is true or false.