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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?
calculate the head required
Motion of two bodies - rough surface and smooth pulley: THE HORIZONTAL SURFACE IS ROUGH AND THE STRING IS PASSING OVER SMOOTH PULLEY. Figure shows two weights W 1 and W 2
Essence of Second Law: Sol: First law deals with conservation and conversion of energy. But it fails to state the conditions under which the energy conversion are possible.
CONCURRENT FORCES
It is essential to select a flat belt drive for a compressor running at 720 r.p.m which is driven by a 25kW, 1440 r.p.m. motor. Space is available for a distance of 3m. The belt is
give me an example of law of superposition
A mix of spherical particles of different sizes is to be separatedinto two size ranges by passing a liquid of density 1200 kg m-3 and viscosity 0.0015 Pa s upward through the mixtu
3. Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A – B + B – A+. The cylinde
hot working vs cold working
Q. Explain about Surface Preparation? All oil, grease, salts, and any other contaminants detrimental to the formation of a good coating bond or coating quality must be removed
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