A reset controller in a hydronic heating system is used to _____
a. reset the burner after shutdown
b. control multiple zone valves
c. modulate pump water flow
d. monitor outdoor temperature
d
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The loss of a single phase of a polyphase motor can cause _____.
a. bearing damage b. excessive vibration c. insulation damage d. failure of the remaining phase windings
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Where is the lamp located when silhouette lighting is desired?
a. in front of the plant c. above the plant b. behind the plant d. under the plant
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When hardness increases, what else also increases?
A) Ductility B) Tensile strength C) Depth of penetration D) Plasticity
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Headlights can be aimed by using _______
A) A bubble level B) An aiming screen C) Either A or B D) Neither A nor B
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