A device that converts a nonelectrical impulse such as sound, heat, light, or pressure into an electrical signal is called a
A) A sending unit B) A switch C) An actuator D) Sensor
D
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On an induced draft furnace, a draft switch that will not close will
A) Cause the induced draft blower to operate continuously, even with no heating call B) Will prevent the igniter from energizing C) Prevent the indoor blower from operating D) Prevent the combustion blower from operating
What is a distillate oil?
A) Distillates evaporate at relatively low temperatures B) Distillates are filtered to remove impurities C) A distillate is what is left after all the residuals have been vaporized D) Distillates are bio-fuels manufactured from ethanol
An ADC converts an analog signal to a ________
Fill in the blank(s) with correct word
The hexadecimal equivalent of decimal 91 is ________
A) 5B16 B) 5D16 C) 4C16 D) 4B16