The standard time is to be established for a manual work cycle by direct time study. the observed time for the cycle averaged 4.80 min. the worker's performance was rated at 90% on all cycles observed. after eight cycles, the worker must exchange parts containers, which took 1.60 min, rated at 120%. the pfd allowance for this class of work is 15%. determine
(a) the normal time and
(b) the standard time for the cycle.
(c) if the worker produces 123 work units during an 8-hour shift, what is the worker's efficiency?

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.