PLCs are available with memory sizes ranging from as little as ____________________ words for small systems up to 32 meg (million) for the larger systems.
Fill in the blank(s) with the appropriate word(s).
256
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Because of the thermistor’s ability to change its resistance ____, they are commonly used as solidÂstate starting relays.
a. rapidly b. negatively c. slowly d. in calibrated increments
The recommended way to discharge a capacitor is to ____.
A. place a screwdriver across the terminals B. assume it will discharge itself over a period of time C. use a 20,000 ohm 5 watt resistor that has had insulated leads soldered to it D. use an ohmmeter
Flare connections are used on mini-split systems to avoid oxidation in the lines and also to avoid heating and destroying the sensitive electronic expansion valves use in the outdoor units
Indicate whether the statement is true or false
On a residential construction site, what is commonly called a "saw pole"?
A) Service utility pole B) Local utility hookup C) Permanent power source D) Temporary power pole