In a standard 6-day period, the production department programme a specific machine to work for 250 hours- its loading time. Changeovers and set-ups take average of 8 hours and breakdown failures average 3 hours every 6 days.
The time when the machine cannot work because it is waiting for material to be delivered from other parts of the process is 1 hour on average and during the period when the machine is running, it averages 92 per cent of its rated speed.
Two per cent of the parts processed by the machine are subsequently found to be defective in some way.

Based on above data, calculate overall equipment effectiveness (OEE)

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.