When troubleshooting an induced-draft gas furnace, what should be checked if the induced-draft fan comes on but the igniter is never energized?
A) Check the microamp signal of the flame sensor.
B) Check the control transformer.
C) Check the draft pressure switch to see if it is closed.
D) Check the incoming gas pressure.
C
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Al planificar la mano de obra, el supervisor debe:
a. conocer los índices de ausentismo y rotación de empleados. b. incluir el entrenamiento de todos los supervisores. c. seleccionar los materiales necesarios para cada integrante del grupo. d. identificar las habilidades necesarias para realizar el trabajo.
The NEC requires that all _____________________ that may require servicing with the power on carry an arc flash label if there is a potential hazard.
A. non-dwelling equipment B. panelboards C. motor controllers D. machinery
What was the highest average speed during any 30-minute time period?
What will be an ideal response?
Inductive reactance increases as the _____
a. frequency increases b. frequency decreases c. impedance increases d. impedance decreases