Which component failure could keep the fan from operating during the heating cycle on a traditional standing pilot gas furnace?
A) An open coil on the fan relay
B) A defective fan switch
C) a defective limit switch
D) A bad thermostat wire connection on the G terminal
B
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The ____ pressure switch is interchangeable with existing electromechanical pressure switches.
a. sealed piston b. Bourdon tube c. diaphragm d. solid state
In the accompanying figure, the item identified as number 2 is a wide, dark line that would probably be drawn with a ____ lead pencil.
A. 0.3 or 0.5 B. 0.5 or 0.7 C. 0.7 or 0.9 D. 0.9 or 1.1
What is the maximum working pressure for a low pressure hot water boiler?
A) 160 psi B) 100 psi C) 10 psi D) 15 psi
A vehicle has an excessive amount of freeplay in the steering wheel and it is difficult to keep it traveling straight on a level road. Which is the LEAST likely cause?
A) Loose pitman arm retaining nut B) Excessive play in the ball socket assemblies C) Worn idler arms D) Worn tie rod ends