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Consider a simple single machine system. It consists of workpieces that enter the system, wait their turn to be processed on a single machine, and then depart the system. The workpieces enter the system one at a time with an exponentially distributed random time between arrivals with a mean of 4.4 minutes. The processing time for each workpiece is a random variable characterized by a triangular distribution with a minimum of 3.2 minutes, mode of 4.2 minutes and a maximum of 5.2 minutes. Two scheduling rules are under consideration- FIF0 and SPT rules. FIFO suggests that the jobs should be processed in the same order in which they entered the system. SPT rule suggests that whenever the machine is available, we load the job with the shortest processing time. Simulate the system for 100 hours. Time in system is the performance measure of interest. Which rule yields lower time in system?
A multiple disc clutch, steel on bronze, is to transmit 4.5 kW at 750 r.p.m. The inner radius of contact is 40mm and outer radius of the contact is 70 mm. The clutch operates in oi
A load cell based on a "proving ring" is shown below. The circular portion of the load cell has an inner radius of 1.25 in and outer radius of 1.50 in. The ring has a depth (i.e.
Compute the intensity of normal stress: A uniform steel bar of 2 cm × 2 cm area of cross section is subjected to axial pull of 40000 kg. Compute the intensity of normal stres
Q. A supported rectangular beam with the symmetrical section 200mm in depth is having moment of inertia of 2.26 x 10 -5 m 4 about its neutral axis. Find out longest span over w
Prove the parallelogram law of forces: Assume that the two forces P and Q act at a point ' O ' as shown in figure given below. The force P can be represented in magnitud
Calculated the diameter of an aluninium shaft: Calculated the diameter of an aluninium shaft that is designed to store the similar amount of strain energy per unit volume as a
Q1. A short vertical column consists of a channel section with the dimensions shown in Figure 1(a). The column (part of a system used to support a machine) carries a compressive p
Problems to improve the deficirncies of IGES Within the framework of this interface, an attempt was to be made to improve the deficiencies of IGES, SET and VDAFS which have the
Improvements Required - Industrial Safety The outlining of association of safety engineering, as done above, with quality, productivity, profit etc. has also tended to make im
The attached figure depicts an indirectly fired gas turbine engine. In the gas turbine engine, air is compressed to a high pressure and then heat is added. The high pressure, high
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