When cleaning bearings, technician A always makes sure there is no cleaning solvent remaining on the bearing before packing the bearing with grease. Technician B says that leaving some solvent on the bearing helps the new grease to bed in faster. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A
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One mole of an ideal gas with 
= (5/2)R and 
= (3/2)R expands from 
= 6 bar and 
= 800 K to 
= 1 bar by each of the following paths:
(a) Constant volume (b) Constant temperature (c) Adiabatically Assuming mechanical reversibility, calculate W, Q, ?U, and ?H for each process. Sketch each path on a single PV diagram.
How have scientists justified the use of animals for research?
What will be an ideal response?
In a dual-fuel heat pump packaged system, when does the furnace go into use?
A) Only during winter conditions B) Once the outdoor temperature is below the balance point C) Once the outdoor temperature drops to the balance point D) Only when it is most economical
Define planned maintenance
A) Replacing all system components on a rotating basis B) Performing maintenance and testing whenever the system quits operating correctly C) Monitoring key performance indicators and performing maintenance when these indicators show a need for maintenance D) Performing maintenance and testing based on a regular schedule