One advantage of the ____ starter is the smooth acceleration.
a. autotransformer
b. primary resistor-type
c. wye- (or star) delta
d. part winding
b. primary resistor-type
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What term refers to the release of energy during a chemical reaction?
A) Exothermic B) Endothermic C) Heterogeneous D) Immiscible
What type of organism is ringworm?
a. Roundworm c. Fungus b. Pox virus d. Bacterium
Why do gas furnace efficiencies jump from 80 percent to 90 percent?
A) The blower used with 85 percent furnaces cannot be used for air conditioning. B) Federal regulations do not allow the production of mid-efficiency furnaces. C) By installing a recuperative coil ahead of the main heat exchanger. D) The physics of combustion make it impossible to produce an 85 percent efficient furnace.
Which type of space heater is generally the easiest to maintain?
A) Unvented gas space heater B) Kerosene space heater C) Electric space heater D) Vented gas space heater