When an electric motor is mounted on rubber isolators, the measured peak of the normalized amplitude ratio kX /F is 4. What must the frequency ratio r be in order to reduce the normalized amplitude ratio to 1/3 if we model the damping in the isolators as viscous damping?

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

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