Explain the difference between the way a relay logic control system operates and the way a communicating control system operates
What will be an ideal response?
Relay logic is like a light switch – when the switch is on the light operates, when the switch is off the light is off. A communicating control system is more like a computer network. The units respond to commands sent over the communication network, not the presence or absence of control voltage.
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Comment on the feasibility of cooling your kitchen in the summer by opening the door to the electrically powered refrigerator.
What will be an ideal response?
The fur of a chinchilla is very soft with _____ hairs growing from one hair follicle
a. up to a dozen b. roughly half a dozen c. approximately 120 d. as many as 60
Which of these common foods is a product of insects?
a. Honey c. Salt b. Peppermint d. Soy
When performing subtraction by 2's-complement addition:
A) the minuend and subtrahend are both changed to the 2's-complement. B) the minuend and subtrahend are both left in their original form. C) the minuend is left in its original form and the subtrahend is changed to its 2's-complement. D) the minuend is changed to 2's-complement and the subtrahend are both changed to the 2's-complement.