In nanoscale conduction through a very thin gas layer A. The molecules collide more frequently with each other than the solid boundaries. B. The mean free path of the molecules is smaller than the physical dimensions. C. The molecules collide more frequently with the solid boundaries than with each other. D. Both A and B E. Both B and C

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above