How many blower motors does a window air conditioner have?
A) Two - a low speed blower motor and a high speed blower motor
B) None - window air conditioners do not require a blower motor because they are not connected to a duct system
C) One - a single double shafted blower motor is used for both the evaporator and condenser fans
D) Two - an evaporator fan motor and a condenser fan motor
C
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The vision of a company or department describes ________
A) Your dream for how you'd like it to be B) Unreasonable expectations for the future C) Their specific goals for the next three years D) More than one of the above is correct
The examine if closed instruction ________
A) Is an input instruction only used for field devices with NO contacts B) Can only be assigned an input file address starting I: C) Has the following logic symbol (-|/|-) D) Has the following logic symbol (-| |-)
Why should a carbon monoxide detector be used in any room where gas-fired space heaters are being used?
A) Because CO is an integral component of natural gas, a CO detector will alarm if there are any small gas leaks in the gas line. B) High levels of CO can cause nuisance trips of the space heater's oxygen depletion sensor. C) The efficiency of gas-fired space heaters drops when the CO level in the room exceeds 500 ppm. D) Gas-fired space heaters can produce carbon monoxide if the space they are operating in does not have adequate combustion air.
The total job takes 3.5 hours. What is the average hourly cost of labor, to the nearest cent?
A. $19.86 B. $20.34 C. $20.58 D. $21.64