Water purity is primarily determined by measuring __________.
A. pH
B. conductivity
Answer: B
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17,200 cu. ft. of dirt must be moved for a geothermal heat exchange bed. 8,855.35 cu. ft. have already been removed. ?Find the volume of dirt that must be removed to complete the job.
Fill in the blank(s) with the appropriate word(s).
A gear type coupling is used:
A. for extremely heavy loads. B. when the unit can't be moved. C. where alignment is not critical. D. none of the above.
When installing an oil-fired furnace in a confined space with a firing rate of 100,000 Btuh, what is the minimum free air opening required if the combustion air vents are directly communicating with the outside?
A) 100,000/1,000 = 100 sq in for each grille B) 100,000/5,000 = 20 sq in for each grille C) 100,000/4,000 = 25 sq in for each grille D) 100,000/2,000 = 50 sq in for each grille
Technician A says that in any type of fluid coupling not equipped with a mechanical lock-up some slippage exists resulting in a difference between input and output speeds. Technician B says that in torque converter coupling phase impeller and turbine rpms match. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B