A second order measuring system has a known natural frequency of 2000 Hz and damping ratio of 0.8. Would it be satisfactory to use it to measure a signal expected to have frequency content at up to 500 Hz?

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false

Areheat rankine cycle operates with water as the working fluid. steam enters the first turbine at 8 mpa and 450°c and exits at 0.8 mpa. it is then reheated to 400°c before entering the second turbine, where it exits at 10 kpa. if the amount of work into the pump is 8.04 kj/kg and the net work per cycle produced is 1410.25 kj/kg, determine the thermal efficiency of the cycle.

Assume that you are asked to perform a boring operation on a large-diameter hollow workpiece. would you use a horizontal or a vertical boring mill?