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Potential in a conducting box. A three-dimensional cubic box, with dimensions a x a X a is grounded on four sides. The two sides at z = a and at x = a are connected to a constant potential as shown in Figure 5.53. Calculate the potential everywhere inside the box.
For an uninsulated duct whose average surface tem- perature is 50°C, estimate the rate of heat loss from the duct. The surface emissivity and convection coefficient are approximately 0.5 and 4 W/m2 · K, respectively.
The tank has a 180 mm inside diameter and a 12 mm wall thickness. Knowing that the tank contains compressed air under a pressure of 8 MPa, determine the magnitude T of the applied torque for which the maximum normal stress in the tank is 75 MPa.
A compressor is employed to compress gas flowing steadily through it. The gas enters the compressor at a temperature of 16°C, a pressure of 100 kPa, and with an enthalpy of 391.2 kJ/kg. The gas leaves the compressor at a temperature of 245°C, a pre..
a large stationary diesel engine produces 15 mw with a thermal efficiency of 40. the exhaust gas which we assume is air
in an automotive gas turbine the centrifugal compressor is driven at 40000 rpm by an axial turbine. the compressor
1. Give two examples of orthogonal cutting. 2. Define tool life 3. Define heat engine. 4. What is crank shaft? 5. Define refrigeration. 6. What is meant by air conditioning?
the compression ratio of an ideal dual cycle is 14. air is at 100 kpa and 300 k at the beginning of the compression
H2O at 50 kPa and 200 degrees C is compressed in a reversible, isothermal process with steady flow until it exists as a saturated vapor. Find w, q, and draw on a t-s diagram and p-v diagram
the presence of raindrops in the air during a heavy rainstorm increases the average density of the air-water mixture.
the corresponding rankine cycle for an actural power plantusing water runs at a high pressure of 6.3mpa a low pressure
A tension of 300 kN is required in the cable at A. If the cable has a mass of 22 kg per meter of its length, compute the required height H of the anchorage above water level and find the length s of cable between A and B.
A six cylinder engine runs at 4000 RPM with a compression ratio of 8:1 and a total clearance volume (total for all 6 cylinders) of 600 mL at TDC. The engine intakes atmospheric air at 100 kPA & 20C. The maximum temperature during the cycle is 1500 C
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