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Determine the ampacity of a No. 12 AWG copper conductor with THHN insulation that will be used in a 120 V, two-wire circuit in an environment with an average ambient air temperature of no greater than 86°F (30°C). Neglect temperature and bundling correction factors.
derive eulers equations of motions stating all your assumptions. a write down the equation in vector form and explain
Air exits from the nozzle at 800m/s. find the air exit temperature from the compressor.
Draw the thermal circuit for the wall and label all temperatures, heat rates, and thermal resistances. What insulation thickness L is required to maintain the outer wall surface at a safe-to-touch tempera- ture of To = 40°C?
Determine the minimum thickness of fibreglas insulation that needs to be used in the wall in order to avoid condensation on the outer surfaces.
nloadnmotor 3 inertia of motor1.2 kgm2 inertia of load 10 kgm2 dampening and load torque can be neglected.draw the
a diver is in inside of a coffin full of gold in the seabed. the coffin has a mass of 510kg and a volume of 0.26m3 so
Is this a linear problem, mathematically speaking?
Determine the maximum theoretical rate of heating provided by a heat pump, in kW per kW of power input, in each of two cases: The role of the cold reservoir is played by (a) the atmosphere at 2208C, (b) ocean water at 58C.
Assume each luminaire consumes 435 W including the ballast. Determine the power density of this lighting installation.
A sine wave at frequency f= 90 Hz is sampled digitally at sampling frequencies fs=200,160 and 50 Hz respectively. For each case, discuss whether there is aliasing. Also for each case, calculate the aliasing (perceived) frequency.(b) Using EXCEL (or M..
Air in a piston cylinder assembly undergoes a Carnot power cycle. The isothermal expansion and compression processes occur at 1400 Kelvin and 350 Kelvin, respectively. The pressures at the beginning and end of the isothermal compression are 100 kPa a..
Steam at 75 kPa and 13 percent quality is contained in a spring-loaded piston-cylinder device, as shown in the figure, with an initial volume of 5.28 m^3. Steam is now heated until its volume is 13.20 m^3 and its pressure is 300 kPa. Determine the he..
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