Limit switches come with either a side lever operator or with a side plunger
Indicate whether the statement is true or false
FALSE
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Which of the following is NOT a cause of high exhaust back pressure?
A) Vacuum leak B) Restricted exhaust pipe C) Restricted muffler D) Restricted catalytic converter
Hangers for fiberboard duct should be placed no further than every:
A) 12 ft. B) 6 ft. C) 5 ft. D) Fiberboard duct does not require hangers because it is self-supporting.
Which type of unit can be used to heat two adjacent rooms at the same time?
A) Forced-air electric space heaters B) Cabinet-type electric space heaters C) Suspended-force fan-unit electric space heaters D) Gas wall furnaces
Total pressure readings are taken on a duct system by
A) Pointing the pressure sensing tube perpendicular to the air stream B) Subtracting the velocity pressure reading from the static pressure reading C) Pointing the pressure sensing tube into the airstream D) Adding the static pressure reading and the total pressure reading