Motors, costs

Each unit cost contains all the costs involved in the installation of that unit. For motors installed costs include the starter, conduit, wire, and a proportionate share of the service panelboard and busbars. The motor cost is not included since this will be part of the equipment cost. In the case of lighting, the installed cost includes the lighting fixtures, the conduit and wire, and a proportional share of the hghting panelboard and service switching costs. 

The motor cost is but one facet of any cost study for selecting voluigc level. The study must compare installed cost of motor, starting equipment, transformers, and power and control cables at the various levels under consideration, as well as plant standards. 

All rocket motor costs per unit, and therefore rocket proplnt costs, are most sensitive to the number of units being produced and to the number of different formulations mixed in a given time interval, by the same equipment, so that a direct comparson based only on processes or proplnt types are meaningless. There are also inherent difficulties in comparing NC base proplnts with composite propints. The former are made in government plants (some of which are operated by private industry) for the most part and so accounting for indirect costs (taxes, depreciation, insurance, and return on investment) cannot be compared to the situation... 

Monel, 431,440-442 Motors cost of, 533 efficiencies of, 521 Muiphree plate efficiency, 661... 

Repeated flicking of centrifuge tubes with the finger tip is, at times, quite painful. To avoid repeated discomfort, a simple flicking device can be constructed with a shaded pole a.c. phonograph motor (cost about 3.00). The motor is screwed onto a wooden board and a cork stopper, bored slightly off-center, is fitted to the motor shaft. When in operation,... 

From the electric motor cost correlations of Corripio et al. (1982a), indexed to mid-2000 (CE = 394), the f.o.b. purchase cost of an electric motor operating at 3,600 rpm, with an open, drip-proof enclosure (referred to here as the base cost, Cg), is plotted in Figure 16.4 as a function of the horsepower consumption, The cost curve is given by the equation ... 

Pump cost (purchase) = 4772.28 Motor rmp = 3600 Motor type = Open, drip-proof Motor cost (purchase) = 1128.03 (Pump + Motor) cost (purchase) = (Pump + Motor) cost (installed) =... 

Assume that W.W. Grainger, a supplier of MRO products, has 1,600 stores distributed throughout the United States. Consider two products—large electric motors and industrial cleaner. Laige electric motors are high-value items with low demand, whereas the industrial cleaner is a low-value item with high demand. Each motor costs 500 and each can of cleaner costs 30. Weekly demand for motors at each store is normally distributed, with a mean of 20 and a standard deviation of... 

In order to be compatible with the maximum course, we need a IN.m stepper motor. The stepper motor costs between US 50 and US 55 and has a 4 1 reduction, coupled at a 10mm diameter pulley (see Figure 8). 

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