The average human ling takes in about 0.6 liter of air with each inhalation, through the mouth and nose, A. This lasts for about 1.5 seconds. Determine the power required to do this if it occurs through the trachea B having a cross-section area of 125 mm². Take air density equal to 1.23 kg/m^3. Hint: Recall that power is force times velocity, V, where F = pA.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false