An open door switch on a gas furnace will cause:
A) The combustion process to shut down, but will not affect the indoor blower.
B) A complete system shutdown–no system operation at all.
C) The door open alarm to sound, but will not affect system operation.
D) The indoor blower to shut down, but will not affect the combustion process.
B
You might also like to view...
Which of the following is an NEC® requirement for grounding and bonding?
a. The path to ground from circuits, equipment, and metal enclosures shall be continuous. b. The path to ground from circuits, equipment, and metal enclosures shall have sufficiently high impedance to facilitate the operation of protective devices. c. The path to ground from circuits, equipment, and metal enclosures shall rely on the earth as an effective ground fault current path. d. The path to ground from circuits, equipment, and metal enclosures shall be capable of safely carrying twice the maximum current of the system.
Technician A says that all piston pins are offset from the centerline of the piston. Technician B says that most piston pins are pressed-fit in the connecting rod. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Minimum standards governing the construction of kennels/catteries include
A. Adequate ventilation and temperature regulation B. Shade from sun and shelter from inclement weather C. Protection from injury and provisions for good sanitation, isolation facilities D. A structurally sound building with provisions for different sized breeds/species E. All of the above
Approximately ____% of all system problems are electrical in nature.
A. 50 B. 75 C. 85 D. 95