A molecular sieve desiccant dryer is used _____________________________
A. in a DDC system to keep the computer chips from developing static charges
B. to control bacteria in cooling towers
C. to remove moisture from compressed air used in pneumatic controls
D. to remove CO? from boiler stack gas
C
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Current transformers sense motor current and supply current to the ____.
a. float switches b. overload heaters c. speed control circuit d. contactors
A ____ weld is distinguished from a backing weld only by its sequence of application with respect to the face side of the groove weld.
A. front B. back C. fill D. groove
La indicación provista por un probador de voltaje representa:
a. el valor exacto del voltaje que se está probando. b. un cortocircuito. c. que existe una diferencia de potencial entre dos puntos. d. un circuito abierto.
A 12 volt test light is a good tool for testing voltage levels
Indicate whether the statement is true or false