Controls that use human hair for sensing are:
A) Pressurestats. B) Humidistats. C) Thermostats. D) Current overloads.
B
You might also like to view...
Why is the process industry concerned with quality?
A) Customer retention will prove that products are of high quality B) Quality products and services are critical to the success of the organization C) It improves profitability of the organization D) It helps maintain or bolster the organization's reputation
Which of the following actions cannot help to prevent moisture contamination of a refrigeration system?
a. Evacuating the system before starting it up b. Installing a filter-drier c. Plugging piping that is exposed to the atmosphere d. Using thicker copper tubing
The stack switch or stack relay ____.
A. starts the fan motor when the thermostat calls for heat B. shuts down the burner if it does not sense heat in the stack C. cuts off the ignition after the flame has been established D. All of the above.
Technician A says that a fully charged car battery produces 12.6 volts. Technician B says that on top post batteries, the positive terminal is smaller than the negative to help prevent connecting in reverse polarity. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B