An actuator is usually a device that:
A) converts a physical variable to an electrical variable.
B) converts analog data to meaningful digital data.
C) stores digital data and then processes that data according to a set of specified instructions.
D) controls a physical variable.
D
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____ welding can be described as the joining of a metal stud to another metal workpiece by means of arc, resistance, friction, or other appropriate welding process.
A. Joint B. Resistance C. Stud D. Friction
The condensation resistance factor (CRF) of glazing is directly related to _______.
A) the R-value of the glazing. B) whether or not reflective glass has been used in the glazing. C) the material used in framing members of glazing. D) whether or not tempered glass has been used in the glazing. E) all of the above.
¿Cuál de los siguientes métodos de verificación de alarmas requiere dos detectores en cada espacio monitoreado?
a. Secuencia positiva de alarma b. Muestreo de colector c. Tipo reinicio y nuevo muestreo d. De zonificación cruzada
A variety of surface qualities and appearances can be achieved when concrete is used as a(n) _____.
a. architectural medium b. weather layer c. structural element d. surfacing material