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The 3-hp induction machine given in Table 6.10-1 is operating at no load. The sequence of the applied voltages is suddenly reversed. Assume the electrical system establishes steady-state operation before the speed of the rotor has changed appreciably. Calculate the torque.
Hydraulic fluid ( density= 840 kg/m3) passes through a knife-edged orifice, characterized by Cd = 0.6 at a volumetric flow rate of 2 liters per minute. If the pressure drop across the orifice is 2 kPa.what is the cross sectional area of the orifice?
A compressed liquid mixture of 42 mol percent n-hexane (1) and 58 mol percent ethane (2) is to be fed to a flash tank where the pressure is reduced and a liquid and vapor stream separated. The flashing operation will be carried out at 32 °C. The liqu..
two forces f1 and f2 with magnitudes 40 and 55 newtons respectively act on an object at the origin. the angle f1 makes
What is the driving force for steady-state known that the concentration of nitrogen in the steel at the high-pressure surface is 2 kg/m3. How far into the sheet from this high pressure side will the concentration be 0.5 kg/m3? Assume a linear con..
Iron is a polytropic material. At room temperature, it has a BCC crystal structure (alpha-iron or ferrite). Upon heating above 912C, it converts to a FCC crystal structure (-iron or austenite). If heated above 1394?C, it converts to a different BCC s..
The plates are 50 mm by 20 mm in size. When parallel to each other, they are 2 mm apart, as shown in Figure 6.46b. When on a plane, they are separated 2 mm while the edges remain parallel. Calculate the range of the capacitor capacitance.
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
An ordinary egg can be approximated as a 5.78 cm diameter sphere. The egg is initially at a temperature of 7.9C and is dropped into boiling water at 97C. Taking the properties of the egg to be p=1020 and cp=3.32. Determine how much heat is transferre..
You have been asked to test a method called 'catWhiteSpace' in a 'Paragraph' object that, within the paragraph, replaces sequences of blank characters with a single blank character.
Derive the consistent- and lumped-mass matrices of the tapered bar element (which deforms in the axial direction) shown in Fig. 12.13. The diameter of the bar decreases from D to d over its length.
A steel bar AC of length 6in and a varying cross-section is loaded as shown in fig 1. The bar is supported by a pin joint at A. which is made of an aluminum pin of unknown diameter.
A specimen of a methacrylate plastic is tested in tension at room temperature, producing the stress-strain data listed in the table. Plot the stress-strain diagram and determine the proportionallimit, modulus of eIasticity, and the yieId stress at..
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