Technician A says that some crankcase vent systems use a calibrated orifice instead of a PCV valve Technician B says that turbocharged engines often use an oil/water separator in the PCV system. Which technician is correct?

A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician


Ans: C) Both technicians

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Technician A says that all O- rings are OK to use with R 134a systems. Technician B says that the color of the O-ring indicates the material it is made from. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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A 200-ft-long section of a steam pipe whose outer diameter is 4 in passes through an open space at 50°F. The average temperature of the outer surface of the pipe is measured to be 280°F, and the average heat transfer coefficient on that surface is determined to be 6?Btu/h•ft2•°F. Determine (a) the rate of heat loss from the steam pipe and (b) the annual cost of this energy loss if steam is generated in a natural gas furnace having an efficiency of 86 percent and the price of natural gas is $1.10/therm (1 therm = 100,000 Btu).

What will be an ideal response?

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Deep cycling means ________

A) The battery is fully discharged and then recharged B) The battery is overfilled with acid (H2SO4) C) Overcharging the battery D) Overfilling or underfilling the battery with water

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What portion of the fiber strand carries the transmitted light?

A. Cladding B. Core C. Protective jacket D. Couplings

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