Refrigerant 134a enters a compressor operating at steady state
assaturated vapor at 0.12mpa and exits at 1.2mpa and 70c at a
masflow rate of 0.108kg/s. as the refrigerant passes through
thecompressor, heat transfer to the surroundings occurs at a of
0.32kj/s. determine at steady state the power input to the
compressor, in kw.

On a average work day more than work place firs are reorted

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.

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.