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The welding power generated in a particular arcwelding operation = 3000 W. This is transferred to the work surface with a heat transfer factor = 0.9. The metal to be welded is copper whose melting point is given in Table 29.2. Assume that the melting factor = 0.25. A continuous fillet weld is to be made with a cross-sectional area = 15.0 mm2 . Determine the travel speed at which the welding operation can be accomplished.
a rotating shaft is made of 42 mm od and 4-mm thick aisi 1018 cold-drawn steel tubing. it has has a 6-mm-diameter hole
Detail of features - Proper proportion of features in each part - Description of Concept Generation Process and design Results
A vertical cylinder fitted with a piston contains air initially at 120kPa and 100C. The piston is restrained by a set of stops. The piston diameter is 0.1m, its mass is 5kg, and the ambient pressure and temperature are 100kPa and 20C. The cylinder is..
water vapor at 6 mpa 600degc enters a turbine operating at steady state and expands to 10 kpa. the mass flow rate is 2
the number of vacancies per cubic meter of a metal at 600degc is 3.11025 vacanciesm3. assume the density of this metal
where the coefficients A through G are constants. Obtain expressions for the friction coefficient Cf and the convection coefficient h in terms of uoo, Too, and appropriate profile coefficients and fluid properties.
Superimpose a uniform ?ow parallel to the x-axis of 10 m=s and a source at the origin of strength q ¼ 10p m2/s. (a) Write the velocity potential f and stream function c.
A system consisting of 1 kg of H20 undergoes a cycle composed of the following closed process: Process1-2: Isochoric heating from P1= 5 bars, T1= 160 degrees Celsius to P2= 10 bars
Thermocouples imbedded in the rod at locations 25 and 120 mm from the billet register temperaturesof 325 and 375°C, respectively. What is the temperature of the billet?
A shell-and-tube heat exchanger is used to cool a flow of steam using a stream of cooling water. The steam enters the heat exchanger at 0.1 bar and a quality of 91% (state 1), and exits as a saturated liquid at the same pressure (state 2). The mass f..
A quantity of water within a piston-cylinder assembly executes a carnot power cycle. During ISOTHERMAL expansion, the water is heated from saturated liquid at 45 bar until it is a saturated vapor. The vapor then expands adiabatically to a pressure of..
A full revolution press has 100 rpm flywheel rotation. The press is equipped with tow hand trip devices mounted on the machine at a distance of 20 inches from the point of operation. How many engagement points on the flywheel would be necessary to ma..
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